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  • 04:39 New Does trickle-down economics actually work? - Jonathan Smith

    Does trickle-down economics actually work? - Jonathan Smith

    11 views / 0 likes - added

    Dig into trickle-down economics, which claims that tax cuts for corporations and the wealthy stimulate the economy and improve people's lives.--In 1981, the US economy was struggling: unemployment rates were climbing and inflation had peaked at an all-tim

  • 04:47 Ethical dilemma: Who should you believe? - Alex Worsnip

    Ethical dilemma: Who should you believe? - Alex Worsnip

    14 views / 0 likes - added

    Puzzle through the ethical dilemma of a spouse accused of murder and decide: do you believe your spouse or the evidence?--Youre sitting on the couch, when you hear a knock on the door. The police have arrived to arrest your spouse for murder. This accusat

  • 05:10 The myth of the original star-crossed lovers - Shannon Zhao

    The myth of the original star-crossed lovers - Shannon Zhao

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    Get to know the myth of the weaver and the cowherd, a pair of star-crossed lovers banished to opposite sides of the Milky Way.--In the court of the Jade Emperor, a young princess had a special skill: she could pluck clouds from the sky and spin them into

  • 05:22 How the Suez Canal changed the world - Lucia Carminati

    How the Suez Canal changed the world - Lucia Carminati

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    Dig into the construction of the Suez Canal, and discover how it became one of the worlds busiest maritime passages.--Today, nearly 30% of all global ship traffic passes through the Suez Canal, totaling over 20,000 ships in 2021. The site of the canal had

  • 05:06 The Irish myth of Diarmuids betrayal - Iseult Gillespie

    The Irish myth of Diarmuids betrayal - Iseult Gillespie

    16 views / 1 likes - added

    Dig into the Irish myth of lovers Grinne and Diarmuid, and follow their journey as they flee from her betrothed, Fionn.--Grinne, princess of Tara and bride-to-be, was furious. She had thought she was betrothed to a young soldier, bold and brilliant enough

  • 04:59 The biggest mistakes in mapmaking history - Kayla Wolf

    The biggest mistakes in mapmaking history - Kayla Wolf

    14 views / 0 likes - added

    Travel through the history of mapmaking and discover what big mistakes cartographers made about the worlds geography.--For thousands of years, people made both functional maps and what are known as cosmographies, illustrating the earth and its position in

  • 05:33 The myth of Hades and Persephone - Iseult Gillespie

    The myth of Hades and Persephone - Iseult Gillespie

    59 views / 0 likes - added

    Dig into the Greek myth of Persephone, who is abducted by Hades and is only allowed to leave the underworld every spring.--One day, Persephone was frolicking in a meadow with the nymph, Cyane. As they admired a flower, they noticed it tremble in the groun

  • 05:10 Why are cockroaches so hard to kill? - Ameya Gondhalekar

    Why are cockroaches so hard to kill? - Ameya Gondhalekar

    30 views / 0 likes - added

    Dig into the genetic adaptations of cockroaches, and find out what makes it so hard to get rid of these tenacious creatures.--In ancient Egypt, there was a spell that declared, Be far from me, O vile cockroach. Thousands of years later, were still trying

  • 05:10 The dark history of zombies - Christopher M. Moreman

    The dark history of zombies - Christopher M. Moreman

    78 views / 0 likes - added

    Trace the origins of zombies from the Afro-Haitian religion of vodou, and discover how zombification was a reflection of slavery.--Zombies have a distinct lineage one that traces back to Equatorial and Central Africa. For three centuries, African people w

  • 06:17 Can you solve the feeding frenzy riddle? - Henri Picciotto

    Can you solve the feeding frenzy riddle? - Henri Picciotto

    86 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--As Numberlands best detective, you thought youd seen it all. But the desiccated corpses of prominent natural numbers have been showing up all over the city. A lockdown is ordered from sundown t

  • Should we eat bugs? - Emma Bryce

    Should we eat bugs? - Emma Bryce

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    View full lesson: http://ed.ted.com/lessons/should-we-eat-bugs-emma-bryce What's tasty, abundant and high in protein? Bugs! Although less common outside the tropics, entomophagy, the practice of eating bugs, was once extremely widespread throughout cultur

  • 05:10 Could a solar storm destroy modern civilization? - Fabio Pacucci

    Could a solar storm destroy modern civilization? - Fabio Pacucci

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    Explore the science of solar storms, and find out why they occur and just how prepared we are for a major event. --In September 1859, miners following the Colorado gold rush woke up to another sunny day. Or so they thought. To their surprise, they soon di

  • 05:55 History vs. Tamerlane the Conqueror - Stephanie Honchell Smith

    History vs. Tamerlane the Conqueror - Stephanie Honchell Smith

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    Tamerlane was one of historys greatest conquerors but was he a great state builder or a bloodthirsty tyrant? You decide. --He was born in the 1330s in the Chaghatayid Khanate, formerly the Mongol Empire. On the steppe, he rose from a lowly sheep thief to

  • 05:10 Watch this if you're scared of snakes - Andrew Whitworth

    Watch this if you're scared of snakes - Andrew Whitworth

    33 views / 0 likes - added

    Travel around the world to visit some of natures most incredible snakes: vipers, and find out which are the most dangerous.--As of 2021, there are 368 species of viper worldwide. The name comes from the term viviparity, which means giving birth to live yo

  • 04:31 How do you know you're not dreaming? - Daniel Gregory

    How do you know you're not dreaming? - Daniel Gregory

    32 views / 0 likes - added

    Download a free audiobook version of The Sandman and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed--Bizarre things happen in dreams: you fly, or conjure an all-you-can-eat buffet out of thin air, or get chased by witches through the h

  • 04:20 The Chinese legend of the butterfly lovers - Lijun Zhang

    The Chinese legend of the butterfly lovers - Lijun Zhang

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    Dig into the Chinese myth of Zhu Yingtai, who disguises herself as a boy in order to attend school, and her love Liang Shanbo.--Although only boys were allowed at the Confucius Academy, what Zhu Yingtai wanted was to go to school. She begged her parents t

  • 05:34 A riddle of ice and fire dragons - Henri Picciotto

    A riddle of ice and fire dragons - Henri Picciotto

    28 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--Its your first day as Center Realms official cartographer, and youve already got a big problem. Center Realm is home to three elder dragons: two ice, one fire, and theyve lived in harmony for c

  • 04:57 The movement that inspired the Holocaust - Alexandra Minna Stern and Natalie Lira

    The movement that inspired the Holocaust - Alexandra Minna Stern and Natalie Lira

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    Trace the history of the eugenics movement in the US, and discover how the belief in ideal genetics led to forced sterilizations.--Since ancient Greece, humans have controlled populations via reproduction, retaining some traits and removing others. But in

  • 04:46 The ingredient in almost everything you eat - Francesca Bot

    The ingredient in almost everything you eat - Francesca Bot

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    Dig into the science of soy, and discover what makes soybeans such versatile plants and whether its healthy for you and the planet.--Soybeans have been cultivated in Asia for thousands of years, and have since spread across the globe. Today, soy is in so

  • 04:39 The myth of the moon goddess - Cynthia Fay Davis

    The myth of the moon goddess - Cynthia Fay Davis

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    Dig into the Maya myth of the moon goddess, Ix Chel, and follow her story as she falls in and out of love with the sun god. --The sun god was in love with the moon goddess, Ix Chel. But the goddess grandfather was very possessive, and would not let the su

  • 04:23 How pigeons took over the world - Elizabeth Carlen and Joanna Moles

    How pigeons took over the world - Elizabeth Carlen and Joanna Moles

    32 views / 0 likes - added

    Trace the ancient history of the pigeon, and discover how these birds became one of the most abundant species on the planet.--Seeing their meat as a protein source and their poop as the perfect fertilizer, humans brought pigeons into captivity as far back

  • 04:37 4 signs of emotional abuse - Viann Nguyen-Feng

    4 signs of emotional abuse - Viann Nguyen-Feng

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    Learn how to spot some of the most common signs of emotional abuse and what you can do if someone is experiencing these behaviors.--Emotional abuse can be incredibly damaging, increasing a persons chances of developing depression and anxiety. But these be

  • 06:04 The dark history of the suburbs - Kevin Ehrman-Solberg and Kirsten Delegard

    The dark history of the suburbs - Kevin Ehrman-Solberg and Kirsten Delegard

    27 views / 0 likes - added

    Discover the dark history of the American suburbs, and how practices like racial covenants restricted access to home ownership for people of color.--Beginning in the 1800s, people began writing clauses into property deeds that were meant to prevent all fu

  • 06:24 Can you solve the Big Bang riddle? - James Tanton

    Can you solve the Big Bang riddle? - James Tanton

    42 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--Its moments after the Big Bang and youre still reeling. Youre a particle of matter, amidst a chaotic stew of forces, fusion, and annihilation. If youre lucky and avoid being destroyed by antima

  • 05:27 Building the impossible: Golden Gate Bridge - Alex Gendler

    Building the impossible: Golden Gate Bridge - Alex Gendler

    64 views / 0 likes - added

    Explore the construction of Californias Golden Gate Bridge, and dig into the engineering innovations that made the structure possible.--Stretching 227 meters tall, two towers were assembled to support Californias Golden Gate Bridge. They were just one of

  • 05:27 The tragic myth of the Sun God's son - Iseult Gillespie

    The tragic myth of the Sun God's son - Iseult Gillespie

    51 views / 0 likes - added

    Dive into the Greek myth of Helios and Phaethon, where the Sun God allows his mortal son to drive his chariot for a day.--Every morning, Helios unleashed his golden chariot, and set out across the sky. As the Sun God transformed dawn into day, he thought

  • 04:48 Can you solve the birthday cake riddle? - Marie Brodsky

    Can you solve the birthday cake riddle? - Marie Brodsky

    24 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--Your friends birthday is tomorrow, and hes turning well youve forgotten. A ginormous cake has been prepared and your job is to sculpt his age as the chocolate centerpiece. The birthday boy is a

  • 05:17 Which animal has the best eyesight? - Thomas W. Cronin

    Which animal has the best eyesight? - Thomas W. Cronin

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    Explore the incredible diversity of eyes and vision in the animal kingdom, and find out which creature has the best eyesight.--The animal kingdom boasts an incredible diversity of eyes. Some rotate independently while others have squiggly-shaped pupils. S

  • 04:34 The myth of Anansi, the trickster spider - Emily Zobel Marshall

    The myth of Anansi, the trickster spider - Emily Zobel Marshall

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    Follow the spider Anansi on his quest to complete a challenge from the Sky God in order to take ownership of the worlds stories.--Long ago, all stories belonged to Nyame, the all-seeing Sky God. But one creature, Anansi, was determined to bring the storie

  • 04:42 Can you outsmart the fallacy that divided a nation? - Elizabeth Cox

    Can you outsmart the fallacy that divided a nation? - Elizabeth Cox

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    Explore the middle ground fallacy, which assumes that the truth is always a compromise between two extreme opposing positions.--Its 1819. The US is preparing to make Missouri and Maine new states. One representative insists that slavery shouldnt be allowe

  • 05:09 The myth of Gawain and the Green Knight - Dan Kwartler

    The myth of Gawain and the Green Knight - Dan Kwartler

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    Dig into the myth of the Green Knight, who comes to King Arthurs court to challenge the honor and bravery of Camelots knights. --It was Christmas in Camelot and King Arthur was throwing a party. In the midst of the revelry, a towering knight proposed a ga

  • 05:08 What is normal and what is different? - Yana Buhrer Tavanier

    What is normal and what is different? - Yana Buhrer Tavanier

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    Discover where our perception of what is normal comes from, and how it impacts the decisions we make.--The word normal is often used as a synonym for "typical," "expected," or even "correct." By that logic, most people should fit the description of normal

  • 05:03 Popular Why doesn't everyone have a jetpack? - Richard Browning

    Why doesn't everyone have a jetpack? - Richard Browning

    3,540 views / 0 likes - added

    Explore the physics of how jetpacks fly, and discover the technology that allows pilots to maneuver the engines.--In 1961, Yuri Gagarin piloted a spacecraft in humanitys first manned space flight. A week later, Bell Aerosystems debuted a gas-powered rocke

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  • 04:57 The myth of Narcissus and Echo - Iseult Gillespie

    The myth of Narcissus and Echo - Iseult Gillespie

    40 views / 0 likes - added

    Download a free audiobook version of Atlas of the Heart and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed--One day, Echo was drifting through the woods and fell in love with a handsome young hunter named Narcissus. Cursed by Hera to o

  • 05:47 The dark history of the overthrow of Hawaii - Sydney Iaukea

    The dark history of the overthrow of Hawaii - Sydney Iaukea

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    Get to know the story of Queen Liliuokalani, the last queen of Hawaii, and how she fought the US annexation of the islands. --On January 16th, 1895, two men arrived at Liliuokalanis door, arrested her, and imprisoned her. The Missionary Party had recently

  • 05:00 Popular Why do cats have vertical pupils? - Emma Bryce

    Why do cats have vertical pupils? - Emma Bryce

    3,552 views / 0 likes - added

    Dive into the incredible diversity of animal pupils, and how the different shapes indicate the animals role in an ecosystem.--Peering into the eyes of different animals, youll see some extraordinarily shaped pupils. House cats, for one, are twilight hunte

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  • 05:37 Popular Why is the Mona Lisa so famous? - Noah Charney

    Why is the Mona Lisa so famous? - Noah Charney

    3,471 views / 0 likes - added

    Discover what factors helped Leonardo da Vincis Mona Lisa become the worlds most famous painting.--More than 500 years after its creation, Leonardo da Vincis Mona Lisa is arguably the worlds most famous painting. Many scholars consider it an outstanding w

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  • 05:58 The myth of Lokis monstrous children - Iseult Gillespie

    The myth of Lokis monstrous children - Iseult Gillespie

    64 views / 0 likes - added

    Download a free audiobook version of Where the Crawdads Sing and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed--Odin, the king of Asgard, was plagued by nightmares. Three fearsome figures haunted his dreams: a massive, writhing shadow

  • 04:46 Why is it so hard to escape poverty? - Ann-Heln Bay

    Why is it so hard to escape poverty? - Ann-Heln Bay

    50 views / 0 likes - added

    Explore the paradox of welfare programs, and learn how they inadvertently reinforce generational poverty, and what we can do to fix them.--Imagine that youve been unemployed for months. Government benefit programs have helped you cover your expenses, but

  • 05:14 The dark history of Mount Rushmore - Ned Blackhawk and Jeffrey D. Means

    The dark history of Mount Rushmore - Ned Blackhawk and Jeffrey D. Means

    94 views / 0 likes - added

    Uncover the hidden history of the building of Mount Rushmore, and how its creation destroyed sacred Native American land.--Between 1927 and 1941, workers blasted 450,000 tons of rock from a mountainside using chisels, jackhammers, and dynamite. Gradually,

  • 04:26 You can only save one who do you choose? - Doug MacKay

    You can only save one who do you choose? - Doug MacKay

    76 views / 0 likes - added

    Puzzle through the ethical dilemma where two ships are in distress but you can only save one, and decide: which do you choose?--You are the captain of an interstellar cargo transport headed to port when you receive two distress calls. The first is from a

  • 05:12 Blood, concrete, and dynamite: Building the Hoover Dam - Alex Gendler

    Blood, concrete, and dynamite: Building the Hoover Dam - Alex Gendler

    81 views / 0 likes - added

    Dig into the engineering of the Hoover Dam, a concrete arch-gravity dam on the Colorado River that supplies water to the US southwest.--In the early 20th century, the US had expanded from coast to coast, but many cities in the southwest still lacked relia

  • 05:52 Can stereotypes ever be good? - Sheila Marie Orfano and Densho

    Can stereotypes ever be good? - Sheila Marie Orfano and Densho

    50 views / 0 likes - added

    Explore the model minority stereotype, and discover how it became a label for Asian Americans and is used to enforce racial hierarchies.--In 2007, researchers surveyed 180 teachers to understand if they held stereotypes about their students. The most comm

  • 05:19 Would you raise the bird that murdered your children? - Steve Rothstein

    Would you raise the bird that murdered your children? - Steve Rothstein

    55 views / 0 likes - added

    Dig into the evolutionary strategy of brood parasitism, where one animal tricks another into rearing its young.--A mother honeyguide has placed its chick into a bee-eaters nest puncturing all the other eggs in the nest and leaving only its own hatching al

  • 05:19 Yes, scientists are actually building an elevator to space - Fabio Pacucci

    Yes, scientists are actually building an elevator to space - Fabio Pacucci

    604 views / 1 likes - added

    Explore the physics behind space elevators, which would theoretically use a cable anchored to Earth and extending into space. --Sending rockets into space requires sacrificing expensive equipment, burning massive amounts of fuel, and risking potential cat

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  • 05:05 How one of the most profitable companies in history rose to power - Adam Clulow

    How one of the most profitable companies in history rose to power - Adam Clulow

    45 views / 0 likes - added

    Discover what happened when one company's attempt to dominate a key global trade ended in violence.--During the 17th century, the Dutch East India Company cornered the booming spice market and pioneered trade routes between Asia and Europe. It is widely c

  • 04:34 The life cycle of a pair of jeans - Madhavi Venkatesan

    The life cycle of a pair of jeans - Madhavi Venkatesan

    571 views / 3 likes - added

    Trace the life cycle of a pair of denim jeans, and discover the labor and environmental costs of this fashion staple.--The first pairs of jeans were designed for durability; denim was constructed as a sturdy weave worn by sailors and miners. But over the

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  • 05:29 Can you solve the human cannonball riddle? - Alex Rosenthal

    Can you solve the human cannonball riddle? - Alex Rosenthal

    69 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--They call you the human cannonball. Your act involves flying through rings of fire, bouncing through a trampoline course, and catching the trapezist in the grand finale. Todays pre-flight test

  • 04:40 Why do some people snore so loudly? - Alayna Vaughan

    Why do some people snore so loudly? - Alayna Vaughan

    32 views / 0 likes - added

    Dig into the science of what causes snoring, and how chronic snoring can be a sign of sleep disorders such as sleep apnea.--A leather mask that clamps the mouth shut. A cannonball sewn into a soldiers uniform. A machine that delivers sudden electrical pul

  • 04:57 The twins who tricked the Maya gods of death - Ilan Stavans

    The twins who tricked the Maya gods of death - Ilan Stavans

    75 views / 0 likes - added

    Dive into the Maya myth of twins Junajpu and Ixbalanke as they descend into the underworld to play the gods in a ballgame.--One day, twin brothers Junajpu and Ixbalanke discovered their fathers hidden ballgame equipment and began to play. Hearing their vi

  • 04:39 How to make a sad story funny - Jodie Houlston-Lau

    How to make a sad story funny - Jodie Houlston-Lau

    45 views / 0 likes - added

    Download a free audiobook version of Born A Crime and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed--It may seem counterintuitive, but comedy is often key to a serious story. As a writer, you need your audience to experience a range o

  • 04:20 Nature's fortress: How cacti keep water in and predators out - Lucas C. Majure

    Nature's fortress: How cacti keep water in and predators out - Lucas C. Majure

    47 views / 0 likes - added

    Discover the adaptations that allow cacti to not only survive, but thrive, in some of the harshest desert climates on Earth. --If you were a jackrabbit in the desert, youd be glad to stumble across a cactus: the flesh of these plants is a water source for

  • 05:03 The genes you don't get from your parents (but can't live without) - Devin Shuman

    The genes you don't get from your parents (but can't live without) - Devin Shuman

    28 views / 0 likes - added

    Dig into the essential role that mitochondrial DNA played in the evolution of living things on Earth, and find out why its still evolving.--Inside our cells, each of us has a second set of genes completely separate from our 23 pairs of chromosomes. And th

  • 04:35 What happened to the lost Kingdom of Kush? - Geoff Emberling

    What happened to the lost Kingdom of Kush? - Geoff Emberling

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    Trace the rise and fall of the Kingdom of Kush, an overlooked ancient African civilization which fought off both the Egyptians and Romans. --Along the Nile River, in what is now northern Sudan, lay the ancient civilization of Kush. Though they were once c

  • 05:06 Where will you be able to live in 20 years? - Carol Farbotko and Ingrid Boas

    Where will you be able to live in 20 years? - Carol Farbotko and Ingrid Boas

    48 views / 0 likes - added

    Explore how coastal communities are impacted by climate change and how theyre adapting to rising sea levels and extreme weather.--Humanity has always adapted to changing weather and moved to regions that best support cultural lifestyles and livelihoods. H

  • 05:25 Why don't we cover the desert with solar panels? - Dan Kwartler

    Why don't we cover the desert with solar panels? - Dan Kwartler

    533 views / 0 likes - added

    Watch the 2021 TED Global Countdown Livestream here: https://www.youtube.com/watch?v=SG_vqlb1pOQThis empowering event lays out a credible and realistic pathway to a net-zero future. Featuring some of your favorite celebrities, Countdown will leave you hop

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  • 05:54 Can you solve the risky disk riddle? - James Tanton

    Can you solve the risky disk riddle? - James Tanton

    51 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--Your antivirus squad is up against a code thats hijacked your mainframe. What youve learned from other infected systems, right before they went dark, is that it likes to toy with antivirus agen

  • 04:47 Why is this 2,500 year old shipwreck so well-preserved? - Helen Farr and Jon Adams

    Why is this 2,500 year old shipwreck so well-preserved? - Helen Farr and Jon Adams

    33 views / 0 likes - added

    Discover the unique conditions that make the Black Sea host to dozens of shipwrecks that date back thousands of years. --In 2017, researchers off the Bulgarian coast discovered the oldest intact shipwreck ever found. This ancient Greek vessel was not only

  • 05:20 The surprisingly long history of electric cars - Daniel Sperling and Gil Tal

    The surprisingly long history of electric cars - Daniel Sperling and Gil Tal

    41 views / 0 likes - added

    Can electric cars reclaim their place on the road? Discover how developments in battery technology are making these cars more efficient and powerful.--By the end of the 19th century, nearly 40% of American cars were electric. But these vehicles had a few

  • 05:25 The Norse myth that inspired The Lord of the Rings - Iseult Gillespie

    The Norse myth that inspired The Lord of the Rings - Iseult Gillespie

    62 views / 0 likes - added

    Download a free audiobook version of The Lord of the Rings: The Fellowship of the Ring and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed--The dwarves were master craftspeople. One dwarf, Andvari, forged marvelous creations. He often t

  • 05:14 How to get better at video games, according to babies - Brian Christian

    How to get better at video games, according to babies - Brian Christian

    38 views / 0 likes - added

    Explore what happened when the AI system Deep Q Networks (DQN) attempted to beat the Atari game Montezumas Revenge.--In 2013, a group of researchers wanted to create an AI system that could beat every Atari game. They developed a system called Deep Q Netw

  • 05:46 Are locust plagues unstoppable? - Jeffrey A. Lockwood

    Are locust plagues unstoppable? - Jeffrey A. Lockwood

    47 views / 0 likes - added

    Discover what causes desert locusts to transform into crop-consuming plagues and how they directly endanger humanity.--A ravenous swarm stretches as far as the eye can see. It has no leader or strategic plan; its only goals are to eat, breed, and move on.

  • 06:19 Can you solve the rogue submarine riddle? - Alex Rosenthal

    Can you solve the rogue submarine riddle? - Alex Rosenthal

    78 views / 1 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--Smuggling yourself aboard the rogue submarine was the easy part. Hacking into the nuclear missile launch override a little harder. And youve got a problem: you dont have the override code. You

  • 05:18 Popular The secrets of the worlds most famous symphony - Hanako Sawada

    The secrets of the worlds most famous symphony - Hanako Sawada

    2,436 views / 0 likes - added

    Discover what makes Ludwig van Beethovens Symphony Number Five a musical masterpiece, and uncover the story behind its inception. --Eight ferocious notes open one of the most explosive pieces of music ever composed. Ludwig van Beethovens Symphony Number F

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  • 04:22 Earth's mysterious red glow, explained - Zoe Pierrat

    Earth's mysterious red glow, explained - Zoe Pierrat

    69 views / 0 likes - added

    Explore the phenomenon and uses of chlorophyll fluorescence, a small amount of light emitted by plants during photosynthesis.--In 2009, a satellite circled Earth, scanning and sorting the wavelengths reflecting off the planets surface. Researchers noticed

  • 04:57 What makes a language... a language? - Martin Hilpert

    What makes a language... a language? - Martin Hilpert

    73 views / 0 likes - added

    Dig into the distinction between a language and a dialect, and uncover the history of standardized languages.--Outside of China, Mandarin and Cantonese are often referred to as Chinese dialects, despite being even more dissimilar than Spanish and Italian.

  • 05:52 The rise and fall of the Lakota Empire - Pekka Hmlinen

    The rise and fall of the Lakota Empire - Pekka Hmlinen

    51 views / 0 likes - added

    Trace the rise and fall of the Lakota Empire which, at their height, were the most dominant power in the American West.--In 1776, a powerful empire was born in North America. The Lakotas had reached the Black Hills, the most sacred place and most coveted

  • 04:48 The infamous overpopulation bet: Simon vs. Ehrlich - Soraya Field Fiorio

    The infamous overpopulation bet: Simon vs. Ehrlich - Soraya Field Fiorio

    100 views / 0 likes - added

    Discover an infamous bet between two professors, which sought to predict whether the earth would run out of resources due to a growing human population.--In 1980, Paul Ehrlich and Julian Simon bet $1,000 on a question with stakes that couldnt be higher: w

  • 05:29 What is MSG, and is it actually bad for you? - Sarah E. Tracy

    What is MSG, and is it actually bad for you? - Sarah E. Tracy

    81 views / 0 likes - added

    Dig into the seasoning known as MSG, and find out how this flavoring was developed and if its actually bad for your health.--In 1968, Dr. Robert Ho Man Kwok felt ill after dinner at a Chinese restaurant and wrote a letter to a medical journal connecting h

  • 05:27 The rise of the planet of the trilobites - Nigel Hughes

    The rise of the planet of the trilobites - Nigel Hughes

    117 views / 0 likes - added

    Discover the creatures known as trilobites, one of Earths most successful early animals, and find out what led to their extinction.--Prevailing for around 270 million years and encompassing more than 20,000 distinct species, trilobites are some of the mos

  • 05:55 How we can detect pretty much anything - Hlne Morlon and Anna Papadopoulou

    How we can detect pretty much anything - Hlne Morlon and Anna Papadopoulou

    607 views / 0 likes - added

    Explore how scientists use environmental DNA (eDNA) in a technique called DNA metabarcoding to find and track species.--Scientists have been staking out a forest in Montana for an animal thats notoriously tricky to find. Camera traps havent offered defini

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  • 07:52 Can you outsmart the slippery slope fallacy? - Elizabeth Cox

    Can you outsmart the slippery slope fallacy? - Elizabeth Cox

    87 views / 0 likes - added

    Dig into the slippery slope fallacy, which assumes that one step will lead to a series of events that lead to an extreme often bad scenario.--Its 1954. Vietnamese nationalists are on the verge of securing an independent Vietnam under communist leader Ho C

  • 05:29 The secret society of the Great Dismal Swamp - Dan Sayers

    The secret society of the Great Dismal Swamp - Dan Sayers

    91 views / 0 likes - added

    Uncover the history of the hidden communities that inhabited the Great Dismal Swamp in North America. --Straddling Virginia and North Carolina is an area that was once described as the most repulsive of American possessions. By 1728, it was known as the G

  • 05:08 Popular How the COVID-19 vaccines were created so quickly - Kaitlyn Sadtler and Elizabeth Wayne

    How the COVID-19 vaccines were created so quickly - Kaitlyn Sadtler and Elizabeth Wayne

    802 views / 3 likes - added

    Discover how mRNA vaccines help your immune system fight viral infections and how this decades-old technology was used to create COVID-19 vaccines.--In the 20th century, most vaccines took over a decade to research, test, and produce. But the vaccines for

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  • 05:07 Can you solve the giant spider riddle? - Dan Finkel

    Can you solve the giant spider riddle? - Dan Finkel

    135 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--Once every century, the worlds greatest spiders gather to compete in a series of grueling games. The winner will become the next arachnomonarch, able to command all the worlds spiders to their

  • 05:19 What causes seizures, and how can we treat them? - Christopher E. Gaw

    What causes seizures, and how can we treat them? - Christopher E. Gaw

    113 views / 0 likes - added

    Discover what we know and dont know about the causes and treatment of seizures, and what to do if you encounter someone experiencing a seizure.--Nearly 3,000 years ago, a Babylonian tablet described a curious illness called miqtu that caused symptoms rang

  • 05:06 Popular The method that can "prove" almost anything - James A. Smith

    The method that can "prove" almost anything - James A. Smith

    2,746 views / 2 likes - added

    Explore the data analysis method known as p-hacking, where data is misrepresented as statistically significant.--In 2011, a group of researchers conducted a study designed to find an impossible result. Their study involved real people, truthfully reported

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  • 05:20 The paradox at the heart of mathematics: Gdel's Incompleteness Theorem - Marcus du Sautoy

    The paradox at the heart of mathematics: Gdel's Incompleteness Theorem - Marcus du Sautoy

    107 views / 0 likes - added

    Explore Gdels Incompleteness Theorem, a discovery which changed what we know about mathematical proofs and statements.--Consider the following sentence: This statement is false. Is that true? If so, that would make the statement false. But if its false, t

  • 05:12 The rise and fall of the Kingdom of Man - Andrew McDonald

    The rise and fall of the Kingdom of Man - Andrew McDonald

    106 views / 0 likes - added

    Discover the medieval empire of the Isle of Man and the Hebrides, and how a dynasty of sea kings rose to power.--On a small island in the Irish Sea, fortresses preside over the rugged shores. This unlikely location was the birthplace of a medieval empire

  • 04:56 A year in the life of one of Earth's weirdest animals - Gilad Bino

    A year in the life of one of Earth's weirdest animals - Gilad Bino

    143 views / 0 likes - added

    Trace a year in the life of a platypus, and explore how the animals unique adaptations ensure its survival.--Waddling along the parched Australian earth, a female platypus is searching for fresh water. Over the past year, a severe drought turned rivers an

  • 05:21 Iceland's superpowered underground volcanoes - Jean-Baptiste P. Koehl

    Iceland's superpowered underground volcanoes - Jean-Baptiste P. Koehl

    127 views / 0 likes - added

    Explore how geothermal energy the heat in the Earths crust is being used to create renewable electricity and power.--While the weather in Iceland is often cold, wet, and windy, a nearly endless supply of heat bubbles away below the surface. In fact, almos

  • 04:55 Why can't governments print an unlimited amount of money? - Jonathan Smith

    Why can't governments print an unlimited amount of money? - Jonathan Smith

    100 views / 0 likes - added

    Explore the economic strategy of quantitative easing, where a central bank purchases bonds in order to boost the economy.--In March 2020, the COVID-19 pandemic rocked economies worldwide. Millions of people lost their jobs, and many businesses struggled t

  • 05:58 The dark history of the Chinese Exclusion Act - Robert Chang

    The dark history of the Chinese Exclusion Act - Robert Chang

    96 views / 0 likes - added

    Dig into the Chinese Exclusion Act of 1882, which suspended Chinese immigration to the U.S. and blocked Chinese immigrants from citizenship.--In 1882, the United States Congress passed the Chinese Exclusion Act, the first federal law that restricted immig

  • 05:34 The most notorious scientific feud in history - Lukas Rieppel

    The most notorious scientific feud in history - Lukas Rieppel

    93 views / 0 likes - added

    Get to know one of the most infamous scientific rivalries in history, known as the Bone Wars, where two scientists competed to find dinosaur fossils.--After the California Gold Rush of 1848, settlers streamed west to strike it rich. In addition to preciou

  • 05:22 Axolotls: The salamanders that snack on each other (but don't die) - Luis Zambrano

    Axolotls: The salamanders that snack on each other (but don't die) - Luis Zambrano

    187 views / 1 likes - added

    Discover the extraordinary regenerative powers of the axolotl, a salamander native to Mexico and one of sciences most studied animals.--Axolotls are one of sciences most studied animals. Why, you ask? These extraordinary salamanders are masters of regener

  • 04:53 Can you cheat death by solving this riddle? - Shravan S K

    Can you cheat death by solving this riddle? - Shravan S K

    127 views / 1 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--You and your best friend Bill are the greatest bards in the kingdom but maybe not the brightest. Your hit song has insulted the king and now youre slated for execution. Luckily, Death is a conn

  • 05:57 How one person saved over 2,000 children from the Nazis - Iseult Gillespie

    How one person saved over 2,000 children from the Nazis - Iseult Gillespie

    129 views / 0 likes - added

    Get to know the story of Irena Sendler, a social worker who saved over 2,000 Jewish children from the Warsaw Ghetto during WWII.--In 1943, Irena Sendler and Janina Grabowska froze when they heard Gestapo pounding on the front door. Knowing she was minutes

  • 05:19 What you can do with an extra jaw - Darien Satterfield

    What you can do with an extra jaw - Darien Satterfield

    81 views / 1 likes - added

    Discover the adaptation of the pharyngeal jaw, a secondary set of jaws that allow fish to capture and eat their prey at the same time. --After stalking a cuttlefish, a moray eel finally pounces. As the eel snags the mollusk in its teeth, its prey struggle

  • 04:57 Popular Could we build a wooden skyscraper? - Stefan Al

    Could we build a wooden skyscraper? - Stefan Al

    824 views / 1 likes - added

    Explore the viability of wooden skyscrapers, and see how cross-laminated timber (CLT) helps make these once impossible structures possible.--Towering 85 meters above the Norwegian countryside, Mjstrnet is the worlds tallest wooden building, made almost en

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  • 05:55 History's deadliest king - by Georges Nzongola-Ntalaja

    History's deadliest king - by Georges Nzongola-Ntalaja

    127 views / 1 likes - added

    Dig into the Rubber Terror, the period in which King Leopold IIs horrific regime in the Congo resulted in the deaths of 10 million people.--In 1904, Chief Lontulu laid 110 twigs in front of a foreign commission. Every twig represented a person in his vill

  • 05:04 What few people know about the program that "saved" America - Meg Jacobs

    What few people know about the program that "saved" America - Meg Jacobs

    119 views / 1 likes - added

    Explore the successes and failures of FDRs New Deal, a set of legislation during the Great Depression which aimed to save the US economy. --In 1932, one in four Americans was unemployed, marking the highest unemployment rate in the countrys history. The D

  • 05:49 Why was India split into two countries? - Haimanti Roy

    Why was India split into two countries? - Haimanti Roy

    176 views / 2 likes - added

    Dig into the 1947 Partition of India, when Britain split the region into two states, India and Pakistan, and the mass migrations and violence that followed.--In 1947, the British viceroy announced that after 200 years of British rule, India would gain ind

  • 05:22 A brief history of toilets - Francis de los Reyes

    A brief history of toilets - Francis de los Reyes

    128 views / 2 likes - added

    Explore the history of the toilet and how waste management has evolved from from ancient Mesopotamia to modern day.--On sunny days, citizens of ancient Rome could be found exchanging news and gossip while attending to more urgent business at the public la

  • 05:08 A day in the life of an Ancient Greek oracle - Mark Robinson

    A day in the life of an Ancient Greek oracle - Mark Robinson

    102 views / 0 likes - added

    Follow Aristonike, an Oracle-in-training in Delphi, as she studies to become the Pythia and communicate Apollos will and prophecies.--As the sun rises over Delphi in 500 BCE, Aristonike hurries to the temple of Apollo where a single oracle known as the Py

  • 05:12 How do you know what's true? - Sheila Marie Orfano

    How do you know what's true? - Sheila Marie Orfano

    140 views / 1 likes - added

    Explore the Rashomon effect, where individuals give significantly different but equally believable accounts of the same event. --A samurai is found dead in a quiet bamboo grove. One by one, the crimes only known witnesses recount their version of the even

  • 05:39 The sharks that hunt in forests - Luka Seamus Wright

    The sharks that hunt in forests - Luka Seamus Wright

    137 views / 1 likes - added

    Discover the unique adaptations of marine forests, the ecosystems that provide food and shelter for sharks and diverse coastal species.--Forests dont usually come to mind as a habitat for sharks. But marine forests provide a home for 35% of the worlds sha

  • 05:27 The epic of Gilgamesh, the king who tried to conquer death - Soraya Field Fiorio

    The epic of Gilgamesh, the king who tried to conquer death - Soraya Field Fiorio

    141 views / 2 likes - added

    Dive into the Epic of Gilgamesh, and follow the king of Uruk on a series of dangerous quests as he searches for immortality.--In 1849, in the ancient city of Nineveh in Iraq, archaeologists sifted through dusty remains, hoping to find records to prove tha

  • 04:22 Why do we have hair in such random places? - Nina G. Jablonski

    Why do we have hair in such random places? - Nina G. Jablonski

    185 views / 2 likes - added

    Discover how humans lost their fur as they evolved from primates, and why we still have hair on our bodies.--We have lots in common with our closest primate relatives. But comparatively, humans seem a bit underdressed. Instead of thick fur covering our bo

  • 05:36 Can you solve the Trojan War riddle? - Dennis E. Shasha

    Can you solve the Trojan War riddle? - Dennis E. Shasha

    284 views / 1 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--On Olympus, youve been waiting for an opportunity to bring the bloody Trojan War to its conclusion. The two sides have agreed to a brief truce, and when you consult the Fates, they advise: shou

  • 05:31 Run, sail, or hide? How to survive the destruction of Pompeii - Gary Devore

    Run, sail, or hide? How to survive the destruction of Pompeii - Gary Devore

    125 views / 3 likes - added

    Download a free audiobook version of Into Thin Air and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed--Its a bustling day in Pompeii. After a quick visit to the market, Fabia spots her brothers, Lucius and Marcus, crossing the Forum. T

  • 05:18 The woman who stared at the sun - Alex Gendler

    The woman who stared at the sun - Alex Gendler

    123 views / 1 likes - added

    Get to know the legacy of Hisako Koyama, whose drawings of the suns surface helped scientists reconstruct 400 years of sunspot activity.--In 1944, amateur astronomer Hisako Koyamas latest endeavor was sketching the suns shifting surface. She spent weeks a

  • 04:43 Could you survive the real Twilight Zone? - Philip Renaud and Kenneth Kostel

    Could you survive the real Twilight Zone? - Philip Renaud and Kenneth Kostel

    129 views / 1 likes - added

    Find out how a hatchetfish survives its daily journey from the depths of the oceans Twilight Zone to the resource-rich surface.--Youre traveling deep beneath the oceans surface, where faint lights flicker and toothy grins flash. Your mission is to survive

  • 04:50 What happens to your brain during a migraine - Marianne Schwarz

    What happens to your brain during a migraine - Marianne Schwarz

    97 views / 2 likes - added

    Find out whats happening in the brain when you have a migraine and what we still dont know about this complex disorder.--A throbbing, pounding headache. Bright zigzagging lines across your field of vision. Sensitivity to light, lingering fatigue, disrupte

  • 05:22 Can you be awake and asleep at the same time? - Masako Tamaki

    Can you be awake and asleep at the same time? - Masako Tamaki

    102 views / 0 likes - added

    Discover the phenomenon known as asymmetrical sleep, where parts of an animal's brain are asleep while other areas remain active.--Many animals need sleep. But all of the threats and demands animals face dont just go away when its time to doze. Thats why

  • 05:48 Should you donate your DNA to help cure diseases? - Greg Foot

    Should you donate your DNA to help cure diseases? - Greg Foot

    91 views / 1 likes - added

    Discover how scientists are using crowdsourced DNA to find the causes of untreatable diseases, and developing new drug treatments for them.--When scientists don't know the cause of a medical condition, developing a drug treatment takes significant trial a

  • 04:58 How long should your naps be? - Sara C. Mednick

    How long should your naps be? - Sara C. Mednick

    151 views / 1 likes - added

    Download a free audiobookversionof "Take a Nap: Change Your Life" by Sara Mednick or Matthew Walker's "Why We Sleep" and support TED-Ed's nonprofit mission:https://www.audible.com/ted-ed--Your eyes get heavy and gradually close But wait! Its only lunch ti

  • 05:02 Meet the bluefin tuna, the toughest fish in the sea - Grantly Galland and Raiana McKinney

    Meet the bluefin tuna, the toughest fish in the sea - Grantly Galland and Raiana McKinney

    159 views / 3 likes - added

    Discover the unique adaptations that make the Atlantic bluefin tuna one of the most dominant predators in the ocean.--Whats as big as a polar bear, swallows its prey whole, and swims at forty miles an hour? Its not a shark or a killer whale... its the Atl

  • 05:23 Who decides whats in the dictionary? - Ilan Stavans

    Who decides whats in the dictionary? - Ilan Stavans

    154 views / 0 likes - added

    Explore the history of the Merriam-Webster Dictionary and find out how old words get redefined and how new words are added. --While the concept of a dictionary dates back to ancient civilizations, the first English dictionary wasnt published until 1604. I

  • 05:16 How one design flaw almost toppled a skyscraper - Alex Gendler

    How one design flaw almost toppled a skyscraper - Alex Gendler

    131 views / 1 likes - added

    Dig into the unique engineering of New York Citys Citicorp Center tower, and the design flaw that threatened to topple it.--In 1978, Diane Hartley was writing her undergraduate architecture thesis when she made a shocking discovery. After weeks of poring

  • 05:23 Popular Whats in the air you breathe? - Amy Hrdina and Jesse Kroll

    Whats in the air you breathe? - Amy Hrdina and Jesse Kroll

    1,376 views / 4 likes - added

    Together, nitrogen, oxygen and argon make up 99.93% of our air. So whats the other .07%? Find out what makes up the air you breathe.--Take a deep breath. In a single intake of air, your lungs swell with roughly 25 sextillion molecules, ranging from days-o

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  • 05:14 What really happened during the Attica Prison Rebellion - Orisanmi Burton

    What really happened during the Attica Prison Rebellion - Orisanmi Burton

    156 views / 1 likes - added

    Dig into the Attica Prison Rebellion, where prisoners took control of the facility in response to inhumane living conditions, and the violent retaking that followed.--On September 9th 1971, a spontaneous uprising began in a New York State prison. A group

  • 05:42 Can you solve Dongle's Difficult Dilemma? - Dennis E. Shasha

    Can you solve Dongle's Difficult Dilemma? - Dennis E. Shasha

    214 views / 1 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--According to legend, three galactic terraformers shaped your planet into a paradise. When their work was done, they left the source of their power behind: three golden hexagons, hidden in dunge

  • 05:36 Demolition, disease, and death: Building the Panama Canal - Alex Gendler

    Demolition, disease, and death: Building the Panama Canal - Alex Gendler

    139 views / 0 likes - added

    Discover what it took to build the Panama Canal, and how this colossal construction project changed the region. --In the 19th century, the California gold rush brought thousands of settlers to America's west coast. But finding gold may have been easier th

  • 04:59 Why are airplanes slower than they used to be? - Alex Gendler

    Why are airplanes slower than they used to be? - Alex Gendler

    130 views / 1 likes - added

    Why arent commercial flights getting faster? Dig into the technological and environmental problems facing supersonic flight. --In 1996, a British Airways plane flew from New York to London in a record-breaking two hours and fifty-three minutes. Today, how

  • 05:12 The worlds most painful insect sting - Justin Schmidt

    The worlds most painful insect sting - Justin Schmidt

    125 views / 1 likes - added

    Find out whether a honeybee, a tarantula hawk wasp, or a bullet ant has the most painful insect sting, and what each of their stings feel like. --One of these three creatures is thought to possess the worlds most painful insect sting: theres an ant that f

  • 06:08 How the worlds tallest skyscraper was built - Alex Gendler

    How the worlds tallest skyscraper was built - Alex Gendler

    135 views / 1 likes - added

    Discover the engineering innovations that made building Burj Khalifa, the worlds tallest skyscraper, possible.--In 2004, construction began on a new building in Dubai, promising a revolutionary design that would dwarf the rest of the worlds skyscrapers. F

  • 05:03 How do wind turbines work? - Rebecca J. Barthelmie and Sara C. Pryor

    How do wind turbines work? - Rebecca J. Barthelmie and Sara C. Pryor

    152 views / 2 likes - added

    Explore how wind turbines convert wind into electricity, and the challenges of powering the world entirely with wind energy.--Every 24 hours, wind generates enough kinetic energy to produce roughly 35 times more electricity than humanity uses each day. An

  • 05:20 This tool will help improve your critical thinking - Erick Wilberding

    This tool will help improve your critical thinking - Erick Wilberding

    87 views / 0 likes - added

    Explore the technique known as the Socratic Method, which uses questions to examine a persons values, principles, and beliefs. --Socrates, one of the founding fathers of Western philosophical thought, was on trial. Many believed he was an enemy of the sta

  • 05:40 Whatever happened to acid rain? - Joseph Goffman

    Whatever happened to acid rain? - Joseph Goffman

    108 views / 1 likes - added

    Discover what causes acid rain, and how scientists were able to largely eliminate this major environmental threat. --In 1963, scientists studying Hubbard Brook Experimental Forest made a shocking discovery. Their most recent rainfall samples were nearly 1

  • 05:48 Can you outsmart the apples and oranges fallacy? - Elizabeth Cox

    Can you outsmart the apples and oranges fallacy? - Elizabeth Cox

    118 views / 0 likes - added

    Dig into the false analogy fallacy, which assumes that because two things share a characteristic, they must be alike in other respects.--Its 1997. The United States Senate has called a hearing about global warming. Some expert witnesses point out that pas

  • 05:10 Why good ideas get trapped in the valley of death and how to rescue them

    Why good ideas get trapped in the valley of death and how to rescue them

    133 views / 1 likes - added

    Explore why zero-carbon technologies are vulnerable to the valley of death in product development and how we can change it.--All new products must pass through the "valley of death" before they reach the market. Many never make it out, and sometimes thats

  • 05:05 The surprising secrets of hummingbird flight - Kristiina J. Hurme and Alejandro Rico-Guevara

    The surprising secrets of hummingbird flight - Kristiina J. Hurme and Alejandro Rico-Guevara

    114 views / 1 likes - added

    Dig into the incredible fighting, feeding, and flying capabilities of hummingbirds.--In just a matter of seconds, hummingbirds can perform astonishing aerial acrobatics, eat lunch in midair, pollinate a flower, even escape threats while upside-down. And t

  • 05:42 Ugly History: The Spanish Inquisition - Kayla Wolf

    Ugly History: The Spanish Inquisition - Kayla Wolf

    96 views / 0 likes - added

    Dig into the era of the Spanish Inquisition, when the Catholic Church was charged with rooting out and punishing heresy.--In 1478, Pope Sixtus IV issued a decree authorizing the Catholic monarchs, Ferdinand and Isabella, to root out heresy in the Spanish

  • 04:58 Why every world map is wrong - Kayla Wolf

    Why every world map is wrong - Kayla Wolf

    121 views / 1 likes - added

    Dig into the inaccuracies of flat maps and how different map designs can shift our point of view.--Fourteen Greenlands could fit in Africa but you wouldnt guess it from most maps of the world. The fact is, every world map humans have ever made is wrong. A

  • 05:16 How to see with sound - Jacques S. Abramowicz

    How to see with sound - Jacques S. Abramowicz

    105 views / 0 likes - added

    Discover how scientists and doctors used bats' ultrasound capabilities as inspiration for SONAR and non-invasive medical procedures.--In a dark cave, bats cant see much. But even with their eyes shut, they can navigate rocky topography at incredible speed

  • 05:43 Can you solve the fantasy election riddle? - Dennis E. Shasha

    Can you solve the fantasy election riddle? - Dennis E. Shasha

    151 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--After much debate, the realm has decided dragon jousting may not be the best way to choose its leaders, and has begun transitioning to democracy. Your company was hired to survey the citizens o

  • 04:48 How much land does it take to power the world?

    How much land does it take to power the world?

    112 views / 0 likes - added

    Explore the sustainability of fossil fuels, nuclear power, and renewable energy and how much space each of these power sources use.--No matter how we make electricity, it takes up space. Coal requires mines, and plants to convert it into electricity. Nucl

  • 04:51 How do antidepressants work? - Neil R. Jeyasingam

    How do antidepressants work? - Neil R. Jeyasingam

    119 views / 0 likes - added

    Dig into the discovery of antidepressant drugs, how they work, and what we still dont know about depression.--In the 1950s, the discovery of two new drugs sparked what would become a multi-billion dollar market for antidepressants. Neither drug was intend

  • 04:41 Whats the best fuel for your car?

    Whats the best fuel for your car?

    112 views / 0 likes - added

    Dig into which fuel gasoline, electric, biofuels, or electrofuels is both affordable for consumers and sustainable for the planet.--Historically, most cars have run on gasoline, but that doesnt have to be the case in the future: other liquid fuels and ele

  • 05:10 Popular The incredible, bendable, twistable, expandable elephant trunk - Chase LaDue & Bruce A. Schulte

    The incredible, bendable, twistable, expandable elephant trunk - Chase LaDue & Bruce A. Schulte

    994 views / 4 likes - added

    Discover the incredible ways elephants use their trunks to sense and communicate information and emotion. --As a breeze blows through the savannah, a snake-shaped tube stretches into the air and scans the horizon like a periscope. But its not seeing its s

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  • 04:57 Popular How does artificial intelligence learn? - Briana Brownell

    How does artificial intelligence learn? - Briana Brownell

    1,107 views / 3 likes - added

    Explore the three major methods of machine learning, which allows computers to write their own rules to problem solve and process data.--Today, artificial intelligence helps doctors diagnose patients, pilots fly commercial aircraft, and city planners pred

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  • 01:30 How would you finish the sentence, Imagine if? - Sir Ken Robinson

    How would you finish the sentence, Imagine if? - Sir Ken Robinson

    115 views / 0 likes - added

    Share how you would reimagine the world by finishing the sentence Imagine if Visit http://bit.ly/TEDEdImagineIf for inspiration and to learn more.--Sir Ken Robinson believed that humans have an inexhaustible power: our imaginations. We don't just live in

  • 06:10 Who were Las Mariposas, and why were they murdered? - Lisa Krause

    Who were Las Mariposas, and why were they murdered? - Lisa Krause

    119 views / 2 likes - added

    Get to know the story of the Mirabal sisters, who led a revolution against Rafael Trujillos dictatorship in the Dominican Republic. --For over 30 years, thousands of people were imprisoned, tortured, and murdered under Rafael Trujillos dictatorship in the

  • 05:02 How much electricity does it take to power the world?

    How much electricity does it take to power the world?

    341 views / 1 likes - added

    Discover how much electricity humanity uses, and how clean energy sources could help revolutionize our energy supply in the future. --All around the world, millions of people are flipping a switch, plugging in, and pressing an on button every second. So h

  • 05:39 A brief history of divorce - Rod Phillips

    A brief history of divorce - Rod Phillips

    113 views / 0 likes - added

    Dig into the complicated history of divorce from the earliest known divorce laws in ancient Mesopotamia to modern day. --Formally or informally, human societies across place and time have made rules to bind and dissolve couples. The stakes of who can obta

  • 04:43 The worlds most dangerous fart - Nick Caruso and Dani Rabaiotti

    The worlds most dangerous fart - Nick Caruso and Dani Rabaiotti

    168 views / 1 likes - added

    Dive into the bowels of the animal kingdom to explore why animals fart, and find out which creature has the foulest flatulence. --For most humans, farts are a welcome relief, an embarrassing incident, or an opportunity for a gas-based gag. But for many ot

  • 05:17 What if every satellite suddenly disappeared? - Moriba Jah

    What if every satellite suddenly disappeared? - Moriba Jah

    108 views / 1 likes - added

    Explore what would happen if all of humanitys satellites disappeared and the real-life scenarios that could lead to such a catastrophe. --What would happen if one day all of humanitys artificial satellites suddenly disappeared? Within hours, most of the p

  • 05:00 Why didn't this 2,000 year old body decompose? - Carolyn Marshall

    Why didn't this 2,000 year old body decompose? - Carolyn Marshall

    320 views / 2 likes - added

    Discover the surprising biodiversity of soil, and how its microbes help support all life on Earth.--It may not appear very lively six feet underground, but a single teaspoon of soil contains more organisms than there are human beings on the planet. From b

  • 05:09 The artist who won a Nobel Prize... in medicine - Melanie E. Peffer

    The artist who won a Nobel Prize... in medicine - Melanie E. Peffer

    146 views / 2 likes - added

    Explore how a scientist and artist discovered how our brains transmit signals throughout the body, and laid the foundation for modern neuroscience.--In the 1860s, scientists believed they were on the verge of uncovering the brains biggest secret: how the

  • 05:05 What causes dandruff, and how do you get rid of it? - Thomas L. Dawson

    What causes dandruff, and how do you get rid of it? - Thomas L. Dawson

    117 views / 1 likes - added

    Explore the head-scratching problem of dandruff, and find out why it happens, and how it can be treated.--On top of our heads, there is a type of yeast that lives and dines on all of our scalps. Feasting constantly, its in paradise. And in about half of t

  • 05:23 Can origami save your life? - Evan Zodl

    Can origami save your life? - Evan Zodl

    123 views / 0 likes - added

    Dig into the mathematical rules and patterns of folding origami, the ancient Japanese art of paper folding. --Origami, which literally translates to folding paper, is a Japanese practice dating back to at least the 17th century. In origami, a single, trad

  • 04:41 The myth of the boiling frog

    The myth of the boiling frog

    104 views / 0 likes - added

    Explore how greenhouse gas emissions impact global warming and why its necessary to get emissions down to net zero. --Since 1850, global average temperatures have risen by 1 degree Celsius. That may not sound like a lot, but it is. Why? 1 degree is an ave

  • 05:34 Why do we, like, hesitate when we, um, speak? - Lorenzo Garca-Amaya

    Why do we, like, hesitate when we, um, speak? - Lorenzo Garca-Amaya

    150 views / 0 likes - added

    Why do we fill pauses in speech with words like um, uh, and like? Dig into the hesitation phenomenon to find out their linguistic significance.--For as long as weve had language, some people have tried to control it. And some of the most frequent targets

  • 05:16 The world's biggest battery looks nothing like a battery

    The world's biggest battery looks nothing like a battery

    145 views / 0 likes - added

    Discover the worlds biggest battery and explore how inventors are creating other giant batteries to help power the world sustainably. --As of 2020, the worlds biggest lithium-ion battery is hooked up to the Southern California power grid and can provide e

  • 05:06 Can you solve the demon dance party riddle? - Edwin Meyer

    Can you solve the demon dance party riddle? - Edwin Meyer

    224 views / 1 likes - added

    The only way into the worlds most exclusive club is to solve a challenge from the Demon of Reason. Can you get into the party?--Once a year, thousands of logicians descend into the desert for Learning Man. At the center of that gathering is the worlds mos

  • 04:43 Debunking the myth of the Lost Cause: A lie embedded in American history - Karen L. Cox

    Debunking the myth of the Lost Cause: A lie embedded in American history - Karen L. Cox

    130 views / 1 likes - added

    Examine the myth of the Lost Cause: a campaign created by pro-Confederates after the Civil War to promote the lie that they seceded for state's rights.--In the 1860s, 11 southern states withdrew from the United States and formed the Confederacy. They sece

  • 05:27 The material that could change the world... for a third time

    The material that could change the world... for a third time

    109 views / 0 likes - added

    Explore the role concrete plays in global warming and how scientists are working to create a cleaner, more sustainable concrete.--Today roads, sidewalks, bridges, and skyscrapers are made of a material called concrete. Theres three tons of it for every pe

  • 05:10 Can loud music damage your hearing? - Heather Malyuk

    Can loud music damage your hearing? - Heather Malyuk

    146 views / 0 likes - added

    Dig into the properties of sound to find out just how bad loud music is for your hearing.--After a concert, you find it difficult to hear your friend rave about the show. It sounds like they're speaking from across the room, and its tough to make out thei

  • 05:47 Who decides how long a second is? - John Kitching

    Who decides how long a second is? - John Kitching

    353 views / 2 likes - added

    Discover how scientists developed atomic clocks, which use the vibrations of atoms to measure and maintain a globally consistent time.--In 1967, researchers gathered to answer a long-running scientific question: just how long is a second? It might seem ob

  • 05:15 The rise of the Ottoman Empire - Mostafa Minawi

    The rise of the Ottoman Empire - Mostafa Minawi

    229 views / 0 likes - added

    Explore the early days of the Ottoman Empire, as shrewd political rulers grew the principality into an intercontinental empire. --In the late 13th century, Osman I established a small principality sandwiched between a crumbling Byzantine Empire and a weak

  • 03:37 The Japanese myth of the trickster raccoon - Iseult Gillespie

    The Japanese myth of the trickster raccoon - Iseult Gillespie

    332 views / 1 likes - added

    Dive into the Japanese myth of the shape-shifting tanuki, as the raccoon-like creature rewards a traveling salesman for his kindness.--On the dusty roads of a small village, a traveling salesman was having difficulty selling his wares. As he wandered the

  • 05:50 Why bats don't get sick - Arinjay Banerjee

    Why bats don't get sick - Arinjay Banerjee

    259 views / 0 likes - added

    Explore the relationship between viruses and their hosts, and find out how the evolutionary adaptations of bats keep them safe from viruses. --Consider a bat that is infected with several deadly viruses, including ones that cause rabies, SARS, and Ebola.

  • 04:47 A day in the life of an ancient Babylonian business mogul - Soraya Field Fiorio

    A day in the life of an ancient Babylonian business mogul - Soraya Field Fiorio

    121 views / 0 likes - added

    Follow Beltani, a Babylonian priestess and businesswoman, as she investigates who is undermining her barley fields and tavern.--Its 1762 BCE. As dawn breaks in the Babylonian city of Sippar, Beltani a priestess and businesswoman receives an urgent visit f

  • 04:57 Popular These squids can fly... no, really - Robert Siddall

    These squids can fly... no, really - Robert Siddall

    1,066 views / 6 likes - added

    Dive into the incredible flying capabilities of squids, and how they use flight as a survival tactic.--In 1947, explorers noticed a strange phenomenon while crossing the Pacific Ocean. Somehow, small squid known to live deep beneath the waves kept appeari

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  • 05:41 Savitri and Satyavan: The legend of the princess who outwitted Death - Iseult Gillespie

    Savitri and Satyavan: The legend of the princess who outwitted Death - Iseult Gillespie

    252 views / 2 likes - added

    Dig into the tale of Princess Savitri and her one true love, Satyavan, and the tragic prophecy that entwined their fates forever.--Princess Savitri was benevolent, brilliant, and bright. Her grace was known throughout the land, and many princes and mercha

  • 05:05 The life cycle of a cup of coffee - A.J. Jacobs

    The life cycle of a cup of coffee - A.J. Jacobs

    205 views / 2 likes - added

    Trace the globe-spanning journey of coffee as it goes from plant to brew, and the complex infrastructure that makes it possible.--How many people does it take to make a cup of coffee? For many of us, all it takes is a short walk and a quick pour. But this

  • 05:07 Why should you read Toni Morrisons Beloved? - Yen Pham

    Why should you read Toni Morrisons Beloved? - Yen Pham

    140 views / 0 likes - added

    Dig into Toni Morrisons novel, "Beloved," which tells the story of a family of former slaves whose home is haunted by an abusive spirit.--Two tiny handprints stamped into a cake. A mirror that shatters without warning. A trail of cracker crumbs strewn alo

  • 05:38 The strange history of the world's most stolen painting - Noah Charney

    The strange history of the world's most stolen painting - Noah Charney

    309 views / 0 likes - added

    Discover Jan van Eycks masterpiece, the Ghent Altarpiece, and explore how it became the worlds most stolen artwork.--Throughout six centuries, the Ghent Altarpiece, also called The Adoration of the Mystic Lamb, has been burned, forged, and raided in three

  • 04:57 Popular How do personality tests work? - Merve Emre

    How do personality tests work? - Merve Emre

    1,010 views / 1 likes - added

    Examine how popular personality tests, like the Myers-Briggs Type Indicator and the Enneagram, are designed and their inconsistencies. --In 1942, a mother-daughter duo named Katherine Cook Briggs and Isabel Briggs Myers developed a questionnaire that clas

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  • 05:42 The spear-wielding stork who revolutionized science - Lucy Cooke

    The spear-wielding stork who revolutionized science - Lucy Cooke

    193 views / 1 likes - added

    Explore ridiculous ancient theories of bird migration and discover how scientists finally solved one of the field's oldest mysteries.--In 1822, Count von Bothmer shot down a stork in Germany. However, the bird had already been impaled by a yard-long woode

  • 04:59 A quantum thought experiment - Matteo Fadel

    A quantum thought experiment - Matteo Fadel

    120 views / 0 likes - added

    Can you win a game of quantum foosball using a giant electron instead of a ball? Explore how to use quantum mechanics to your advantage. --After a long day working on the particle accelerator, you and your friends head to the arcade to unwind. The lights

  • 06:28 The worlds largest organism - Alex Rosenthal

    The worlds largest organism - Alex Rosenthal

    423 views / 0 likes - added

    Discover the worlds largest organism: Pando, an enormous and ancient quaking aspen, and find out how it became so huge.--The largest animal in the world is the blue whale, which weighs a massive 150 metric tons. Even so, its not remotely close to being th

  • 05:36 Can you solve the monster duel riddle? - Alex Gendler

    Can you solve the monster duel riddle? - Alex Gendler

    322 views / 3 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd/ --Youve come a long way to compete in the great Diskymon league and prove yourself a Diskymon master. Now that youve made it to the finals, youre up against some tough competition. In round one

  • 05:38 Building the world's largest (and most controversial) power plant - Alex Gendler

    Building the world's largest (and most controversial) power plant - Alex Gendler

    194 views / 1 likes - added

    Explore the creation of Chinas Three Gorges Dam, and find out how the hydroelectric plant generates its power.--In 2018, a single power plant produced more energy than the worlds largest coal-powered and gas-powered plants combined. Chinas Three Gorges Da

  • 05:56 The most colorful gemstones on Earth - Jeff Dekofsky

    The most colorful gemstones on Earth - Jeff Dekofsky

    172 views / 0 likes - added

    What gives opals their signature shimmering colors? Dig into the science of the gemstones formation, millions of years in the making. --In November 1986, Australian miners climbed Lunatic Hill and bored 20 meters into the Earth. They were rewarded with a

  • 04:28 Why is pneumonia so dangerous? - Eve Gaus and Vanessa Ruiz

    Why is pneumonia so dangerous? - Eve Gaus and Vanessa Ruiz

    149 views / 1 likes - added

    Explore how pneumonia attacks the tiny air sacs in your lungs and how your immune system works to fight off the infection.--Every time you breathe, air travels down the trachea, through a series of channels, and then reaches little clusters of air sacs in

  • 05:29 The myth of Loki and the deadly mistletoe - Iseult Gillespie

    The myth of Loki and the deadly mistletoe - Iseult Gillespie

    282 views / 2 likes - added

    Discover the Norse myth of Baldur, the most beloved being in Asgard, and how the trickster god Loki plotted his death. --Baldur was the gentlest and most beloved being in all of Asgard. But lately, he had been plagued by gruesome visions foretelling his o

  • 04:53 Which bag should you use? - Luka Seamus Wright and Imogen Ellen Napper

    Which bag should you use? - Luka Seamus Wright and Imogen Ellen Napper

    628 views / 4 likes - added

    Explore the environmental impact of three types of bags plastic, paper, and cloth to find out how theyre made, used and disposed of. --Youve filled up your cart and made it to the front of the grocery line when youre confronted with yet another choice: wh

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  • 05:38 Popular Why do you get a fever when you're sick? - Christian Moro

    Why do you get a fever when you're sick? - Christian Moro

    831 views / 4 likes - added

    Discover what happens in your body when you have a fever and why its role in our immune response remains a mystery to scientists. --There are many mysteries around fever, but we do know that all mammals, some birds and even a few invertebrate and plant sp

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  • 05:16 Popular How fast is the speed of thought? - Seena Mathew

    How fast is the speed of thought? - Seena Mathew

    1,010 views / 2 likes - added

    Travel into the brain to see how its network of neurons transmit your thoughts and what factors determine how quickly you think.--Your mortal enemy has captured you and hooked you up to a bizarre experiment. Hes extended your nervous system with one very

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  • 05:05 Can you solve the Alice in Wonderland riddle? - Alex Gendler

    Can you solve the Alice in Wonderland riddle? - Alex Gendler

    212 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd/ --After many adventures in Wonderland, Alice has once again found herself in the court of the temperamental Queen of Hearts. Shes about to pass through the garden undetected, when she overhears

  • 04:24 Can you outsmart the fallacy that started a witch hunt? - Elizabeth Cox

    Can you outsmart the fallacy that started a witch hunt? - Elizabeth Cox

    172 views / 1 likes - added

    Dig into the burden of proof fallacy, which assumes that something is true unless proven false and relies on arguments from ignorance.--Its 1950. Anti-communist sentiment in the United States is at an all-time high. Senator Joseph McCarthy claims he has a

  • 05:01 Can you outsmart a troll (by thinking like one)? - Claire Wardle

    Can you outsmart a troll (by thinking like one)? - Claire Wardle

    145 views / 0 likes - added

    Explore the strategies employed by trolls and learn how disinformation campaigns are launched and how to stop them.--Your town is holding a mayoral election and the stakes have never been higher. You suspect one of the candidates will begin pushing false

  • 05:44 What if there were 1 trillion more trees? - Jean-Franois Bastin

    What if there were 1 trillion more trees? - Jean-Franois Bastin

    186 views / 0 likes - added

    How can trees help in the fight against climate change? Dig into the efforts to rebuild damaged ecosystems and reduce carbon emissions.--Today humanity produces more than 1,400 tons of carbon every minute. To combat climate change, we need to reduce fossi

  • 06:03 The dark history of bananas - John Soluri

    The dark history of bananas - John Soluri

    249 views / 0 likes - added

    Explore the history of the notorious United Fruit Company and how its influence over the banana industry impacted Central America. --In December 1910, the exiled former leader Manuel Bonilla boarded a borrowed yacht and set sail for Honduras in hopes of r

  • 04:47 Do larger animals take longer to pee? - David L. Hu

    Do larger animals take longer to pee? - David L. Hu

    200 views / 0 likes - added

    Dive into the physics of the Other Golden Rule and explore the systems and methods animals use to excrete waste. --A cats bladder can only store a golf balls worth of urine. For humans, its a coffee mug and for elephants, a kitchen trash can. An elephants

  • 05:49 How do steroids affect your muscles and the rest of your body? - Anees Bahji

    How do steroids affect your muscles and the rest of your body? - Anees Bahji

    223 views / 0 likes - added

    Dig into the science of how anabolic steroids and their recreational use can affect your body, organs and brain. --Steroids. Theyve caused global scandals. Theyre banned in most athletic competitions. Yet the same properties that help elite athletes and b

  • 05:02 How do investors choose stocks? - Richard Coffin

    How do investors choose stocks? - Richard Coffin

    209 views / 0 likes - added

    Explore the strategies investors use to choose stocks and learn whether its better to be an active or passive investor. --Every day, billions of stocks are traded on the New York Stock Exchange alone. But with over 43,000 companies listed on stock exchang

  • 05:26 Popular Which type of milk is best for you? - Jonathan J. OSullivan & Grace E. Cunningham

    Which type of milk is best for you? - Jonathan J. OSullivan & Grace E. Cunningham

    1,331 views / 4 likes - added

    Dive into the most popular milks dairy, almond, soy and oat to find out which is healthiest for you and for the planet.--If you go to the store in search of milk, there are a dizzying number of products to choose from. Theres dairy milk, but also plant-ba

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  • 05:35 The hidden treasures of Timbuktu - Elizabeth Cox

    The hidden treasures of Timbuktu - Elizabeth Cox

    165 views / 1 likes - added

    Dig into the ancient manuscripts, scrolls, and books of Timbuktu and find out why theyve been hidden for centuries. --On the edge of the vast Sahara desert, citizens snuck out of the city of Timbuktu and took to the wilderness. They buried chests in the d

  • 05:38 The rise and fall of historys first empire - Soraya Field Fiorio

    The rise and fall of historys first empire - Soraya Field Fiorio

    142 views / 0 likes - added

    Discover historys first empire: Sumer, located in Mesopotamia, which built the worlds first cities and created the first writing system.--Historys first empire rose out of a hot, dry landscape, without rainfall to nourish crops, without trees or stones fo

  • 05:42 Could we harness the power of a black hole? - Fabio Pacucci

    Could we harness the power of a black hole? - Fabio Pacucci

    184 views / 1 likes - added

    Download a free audiobook version of "Children of Time" and support TED-Ed's nonprofit mission: https://www.audible.com/ted-edCheck out our full book recommendation: https://shop.ed.ted.com/collections/ted-ed-book-recommendations/products/children-of-time

  • 05:23 What causes panic attacks, and how can you prevent them? - Cindy J. Aaronson

    What causes panic attacks, and how can you prevent them? - Cindy J. Aaronson

    141 views / 0 likes - added

    Dig into the science of what triggers panic attacks, how to recognize them, and the available treatments for panic disorder.--Countless poets and writers have tried to put words to the experience of a panic attack a sensation so overwhelming, many people

  • 07:10 Can we create the "perfect" farm? - Brent Loken

    Can we create the "perfect" farm? - Brent Loken

    173 views / 1 likes - added

    Explore the innovative ways countries are revolutionizing farming to ensure we can feed humanity in a way that works with the environment.--About 10,000 years ago, humans began to farm. This agricultural revolution was a turning point in our history and e

  • 05:00 Can you solve the riddle and escape Hades? - Dan Finkel

    Can you solve the riddle and escape Hades? - Dan Finkel

    234 views / 1 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd/--The underworld is overcrowded, and Zeus has ordered Hades to let some spirits out. Hades arranges all the souls of the dead in a line before Cerberus. When one of his three heads bites down on

  • 05:30 The Amazonian myth of the goblins' revenge - Nathan D. Horowitz

    The Amazonian myth of the goblins' revenge - Nathan D. Horowitz

    373 views / 0 likes - added

    Discover the Siekopai myth of the air goblins, spirits who fly and control the winds, as they clash with the human world. --Deep in the Amazon rainforest in the river Neaocoy lived a school of particularly big and tasty fish. When the rains came and the w

  • 05:13 Why we need national parks - Elyse Cox

    Why we need national parks - Elyse Cox

    215 views / 0 likes - added

    Explore the creation of national parks and the importance of finding a balance between public use and ecological preservation.--In 1903, US President Theodore Roosevelt took a camping trip in Californias Yosemite Valley with conservationist John Muir. Roo

  • 12:10 The World Machine | Think Like A Coder, Ep 10

    The World Machine | Think Like A Coder, Ep 10

    185 views / 1 likes - added

    The adventure ends! Episode 10: Can Ethic make it to the World Machine and stop Hedge from covering the world in a giant maze? --This is episode 10 of our animated series Think Like A Coder. This 10-episode narrative follows a girl, Ethic, and her robot c

  • 05:18 Performing brain surgery without a scalpel - Hyunsoo Joshua No

    Performing brain surgery without a scalpel - Hyunsoo Joshua No

    137 views / 0 likes - added

    Dig into the science of radiosurgery: a procedure that uses light beams of radiation to target tumors, without making a single incision.--Every year, tens of thousands of people have brain surgery without a single incision: theres no scalpel, no operating

  • 06:30 The problem with the U.S. bail system - Camilo Ramirez

    The problem with the U.S. bail system - Camilo Ramirez

    149 views / 0 likes - added

    Explore the U.S. bail systems reliance on cash bail and how it disproportionately hurts people in low-income communities and communities of color.--Since 2000, the annual number of people convicted of crimes in the United States has stayed steady, but the

  • 06:13 Is life meaningless? And other absurd questions -  Nina Medvinskaya

    Is life meaningless? And other absurd questions - Nina Medvinskaya

    261 views / 0 likes - added

    Dive into Albert Camus philosophy of the absurd, and explore the question: if the world is meaningless, could our lives still hold value? --Albert Camus grew up surrounded by violence. His homeland of Algeria was mired in conflict. He lost his father in W

  • 05:48 Is human evolution speeding up or slowing down? - Laurence Hurst

    Is human evolution speeding up or slowing down? - Laurence Hurst

    221 views / 0 likes - added

    Download a free audiobook version of "Sapiens" and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed Check out our full book recommendation: https://shop.ed.ted.com/collections/ted-ed-book-recommendations/products/sapiens--In the past 3,0

  • 05:00 Popular The Japanese folktale of the selfish scholar - Iseult Gillespie

    The Japanese folktale of the selfish scholar - Iseult Gillespie

    776 views / 0 likes - added

    Dive into the Japanese folktale of a scholars quest to purify his body and mind, and the spiritual secret he discovers along the way.--In ancient Kyoto, a Shinto scholar found himself distracted from his prayers and sought to perform a purification ritual

  • 05:34 A day in the life of an ancient Greek architect - Mark Robinson

    A day in the life of an ancient Greek architect - Mark Robinson

    188 views / 0 likes - added

    Follow Pheidias, the chief builder for the Parthenon, as he supervises the construction of the new temple and faces charges of embezzlement.--The year is 432 BCE. As dawn breaks over Athens, Pheidias is already late for work. He is the chief builder for t

  • 02:11 "Jabberwocky": One of literature's best bits of nonsense

    "Jabberwocky": One of literature's best bits of nonsense

    194 views / 2 likes - added

    Dive into Lewis Carrolls epic nonsense poem, Jabberwocky from his novel "Through the Looking-Glass, and What Alice Found There."--As Alice wanders through the dreamscape of Looking-Glass Land in Lewis Carroll's "Through the Looking-Glass, and What Alice F

  • 04:43 Evolutions great mystery - Michael Corballis

    Evolutions great mystery - Michael Corballis

    196 views / 0 likes - added

    Learn how to identify, develop, and share your best ideas with TED Masterclass: http://bit.ly/tedmasterclass --What we call language is something more specific than communication. Language is about sharing whats in our minds: stories, opinions, questions,

  • 05:22 Is the weather actually becoming more extreme? - R. Saravanan

    Is the weather actually becoming more extreme? - R. Saravanan

    239 views / 0 likes - added

    Explore the differences between weather and climate what they are, how we predict them, and what those predictions can tell us. --From 2016 to 2019, the world saw record-breaking heat waves, rampant wildfires, and the longest run of category 5 tropical cy

  • 05:45 How to outsmart the Prisoners Dilemma - Lucas Husted

    How to outsmart the Prisoners Dilemma - Lucas Husted

    222 views / 0 likes - added

    Puzzle through the classic game theory challenge, The Prisoners Dilemma, and decide: would you choose to spare or sacrifice? --Two perfectly rational gingerbread men, Crispy and Chewy, are out strolling when theyre caught by a fox. Instead of simply eatin

  • 05:47 Popular The fish that walk on land - Noah R. Bressman

    The fish that walk on land - Noah R. Bressman

    1,073 views / 3 likes - added

    Explore the challenges facing amphibious fish when they leave water and the ingenious ways they survive on land. --We think of fish as completely aquatic animals. But there are actually hundreds of fish species that are amphibious, meaning that they posse

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  • 05:16 Why people fall for misinformation - Joseph Isaac

    Why people fall for misinformation - Joseph Isaac

    170 views / 0 likes - added

    How does a fact become a misconception? Dig into the world of misinformation to see how facts can become distorted and misleading.--In 1901, David Hnig published research that led to what we know today as the taste map: an illustration that divides the to

  • 05:18 Are all of your memories real? - Daniel L. Schacter

    Are all of your memories real? - Daniel L. Schacter

    268 views / 0 likes - added

    Dig into the psychology of how memories are susceptible to false information and why we shouldnt treat them as truth.--In a 1990s study, participants recalled getting lost in a shopping mall as children. Some shared these memories in vivid detail, but the

  • 05:41 A brief history of plastic

    A brief history of plastic

    207 views / 0 likes - added

    Trace the history of the invention of plastic, and how the material ushered in what became known as the plastics century.--For centuries, billiard balls were made of ivory from elephant tusks. But when excessive hunting caused elephant populations to decl


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