Search Results: "johnny appleseed biography lesson"

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04:06 Popular
What Is A Gift Economy? - Alex Gendler

788 views / 2 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-is-a-gift-economy-alex-gendler What if, this holiday season, instead of saying "thank you" to your aunt for her gift of a knitted sweater, the polite response expected from you was to show up at her house i
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The Effects Of Underwater Pressure On The Body - Neosha S Kashef

788 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-effects-of-underwater-pressure-on-the-body-neosha-s-kashef Why would a fish throw up its stomach? What makes a scuba diver develop painful microbubbles in their joints? Neosha S Kashef details the basics of
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Why Are Human Bodies Asymmetrical? - Leo Q. Wan

1,327 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-are-human-bodies-asymmetrical-leo-q-wan Symmetry is everywhere in nature. And we usually associate it with beauty: a perfectly shaped leaf or a butterfly with intricate patterns mirrored on each wing. But it
04:35 Popular
Can you solve the counterfeit coin riddle? - Jennifer Lu

934 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-counterfeit-coin-riddle-jennifer-lu You’re the realm’s greatest mathematician, but ever since you criticized the Emperor’s tax laws, you’ve been locked in the dungeon. Luckily for you, one of t
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04:52 Popular
Mary's room: A philosophical thought experiment - Eleanor Nelsen

785 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/mary-s-room-a-philosophical-thought-experiment-eleanor-nelsen Imagine a neuroscientist who has only ever seen black and white things, but she is an expert in color vision and knows everything about its physics a
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The Pharaoh That Wouldn't Be Forgotten - Kate Narev

1,197 views / 3 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-pharaoh-that-wouldn-t-be-forgotten-kate-narev Hatshepsut was a female pharaoh during the New Kingdom in Egypt. Twenty years after her death, somebody smashed her statues, took a chisel and attempted to erase
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If Molecules Were People... - George Zaidan And Charles Morton

941 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/chemical-reactions-zaidan-and-morton When molecules collide, chemical reactions can occur -- causing major structural changes akin to getting a new arm on your face! George Zaidan and Charles Morton playfully im
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What Makes Something

488 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/what-makes-something-kafkaesque-noah-tavlin The term Kafkaesque has entered the vernacular to describe unnecessarily complicated and frustrating experiences, especially with bureaucracy. But does standing in a l
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Why The Insect Brain Is So Incredible - Anna Stöckl

1,148 views / 2 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-the-insect-brain-is-so-incredible-anna-stockl The human brain is one of the most sophisticated organs in the world, a supercomputer made of billions of neurons that control all of our senses, thoughts, and a
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04:41 Popular
Making Sense Of Irrational Numbers

2,132 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/making-sense-of-irrational-numbers-ganesh-pai Like many heroes of Greek myths, the philosopher Hippasus was rumored to have been mortally punished by the gods. But what was his crime? Did he murder guests or dis
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04:20 Popular
How Plants Tell Time - Dasha Savage

1,334 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-plants-tell-time-dasha-savage Morning glories unfurl their petals like clockwork in the early morning. A closing white waterlily signals that it’s late afternoon. And moon flowers, as their name suggests, on
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How do focus groups work? - Hector Lanz

582 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/how-do-focus-groups-work-hector-lanz Focus groups have been widely used by organizations and individuals to find out how their products and ideas will be received by an audience. From the usage of household prod
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The Hidden Worlds Within Natural History Museums - Joshua Drew

907 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-hidden-worlds-within-natural-history-museums-joshua-drew When you think of natural history museums, you might picture exhibits filled with ancient lifeless things, like dinosaurs or meteorites. But behind th
04:47 Popular
How does money laundering work? - Delena D. Spann

708 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/how-does-money-laundering-work-delena-d-spann Money laundering is the term for any process that “cleans” illegally obtained funds of their “dirty” criminal origins, allowing them to be used within the legal econ
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How To Draw A Beach Sunset - Blending Gel Crayons

185 views / 1 likes - added 1 year ago

Hey there, art friends! Teryn and I are excited to bring you a bright and colorful art lesson - how to draw a beach sunset! We're using our new Art For Kids Hub gel crayons in this lesson, showing you how to blend colors to create an amazing sunset. This
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What Is The World Wide Web? - Twila Camp

1,660 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-is-the-world-wide-web-twila-camp The World Wide Web is used every day by millions of people for everything from checking the weather to sharing cat videos. But what is it exactly? Twila Camp describes this
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Poison Vs. Venom: What's The Difference? - Rose Eveleth

936 views / 2 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/venom-vs-poison-what-s-the-difference-rose-eveleth Would you rather be bitten by a venomous rattlesnake or touch a poisonous dart frog? While both of these animals are capable of doing some serious damage to the
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The Science Of Stage Fright (and How To Overcome It) - Mikael Cho

795 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-science-of-stage-fright-and-how-to-overcome-it-mikael-cho Heart racing, palms sweating, labored breathing? No, you're not having a heart attack -- it's stage fright! If speaking in public makes you feel like
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What Is Depression? - Helen M. Farrell

720 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-is-depression-helen-m-farrell Depression is the leading cause of disability in the world; in the United States, close to ten percent of adults struggle with the disease. But because it’s a mental illness, i
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Free Falling In Outer Space - Matt J. Carlson

1,763 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/free-falling-in-outer-space-matt-j-carlson If you were to orbit the Earth, you'd experience the feeling of free fall, not unlike what your stomach feels before a big dive on a roller coaster. With a little help
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Why Do We Have To Wear Sunscreen? - Kevin P. Boyd

571 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-do-we-have-to-wear-sunscreen-kevin-p-boyd You already know that a trip to the beach can give you a nasty sunburn, but the nitty gritty of sun safety is actually much more complex. Wrinkle-causing UVA rays an
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04:13 Popular
Can You Solve The Temple Riddle? - Dennis E. Shasha

1,007 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-temple-riddle-dennis-e-shasha Your expedition finally stands at the heart of the ancient temple. But as you study the inscriptions in the darkness, two wisps of green smoke burst forth. The wal
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Why Is Being Scared So Fun? - Margee Kerr

734 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-do-we-like-to-scare-ourselves-margee-kerr At this very moment, people are lining up somewhere to scare themselves, be it with a thrill-ride or a horror movie. In fact, in October of 2015 alone, about 28 mill
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04:35 Popular
What Would Happen If You Didn’t Sleep? - Claudia Aguirre

1,001 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-would-happen-if-you-didn-t-sleep-claudia-aguirre In the United States, it’s estimated that 30 percent of adults and 66 percent of adolescents are regularly sleep-deprived. This isn’t just a minor inconvenie
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5 Tips To Improve Your Critical Thinking - Samantha Agoos

1,051 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/5-tips-to-improve-your-critical-thinking-samantha-agoos Every day, a sea of decisions stretches before us, and it’s impossible to make a perfect choice every time. But there are many ways to improve our chances
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How does impeachment work? - Alex Gendler

755 views / 0 likes - added 6 years ago

Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/how-does-impeachment-work-alex-gendler For most jobs, it’s understood that you can be fired – whether for crime, incompetence, or just poor performance.
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How Do Animals See In The Dark? - Anna Stöckl

875 views / 1 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/how-do-animals-see-in-the-dark-anna-stockl To human eyes, the world at night is a formless canvas of grey. Many nocturnal animals, on the other hand, experience a rich and varied world, bursting with details, sh
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04:42 Popular
Why Do Blood Types Matter? - Natalie S. Hodge

1,232 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-do-blood-types-matter-natalie-s-hodge It’s often said that despite humanity’s many conflicts, we all bleed the same blood. It’s a nice thought, but not quite accurate. In fact, our blood comes in a few diffe
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What makes a poem … a poem? - Melissa Kovacs

803 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/what-makes-a-poem-a-poem-melissa-kovacs What exactly makes a poem … a poem? Poets themselves have struggled with this question, often using metaphors to approximate a definition. Is a poem a little machine? A fi
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Why do animals have such different lifespans? - Joao Pedro de Magalhaes

1,390 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/why-do-animals-have-such-different-lifespans-joao-pedro-de-magalhaes For the microscopic lab worm C. elegans, life equates to just a few short weeks on Earth. The bowhead whale, on the other hand, can live over
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Illuminating photography: From camera obscura to camera phone - Eva Timothy

632 views / 0 likes - added 6 years ago

VIew full lesson: http://ed.ted.com/lessons/illuminating-photography-eva-timothy The origins of the cameras we use today were invented in the 19th century. Or were they? A millenia before, Arab scientist Alhazen was using the camera obscura to duplicate i
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What Causes Economic Bubbles? - Prateek Singh

1,053 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-causes-economic-bubbles-prateek-singh During the 1600’s, the exotic tulip became a nationwide sensation; some single bulbs even sold for ten times the yearly salary of a skilled craftsman. Suddenly, though,
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How inventions change history (for better and for worse) - Kenneth C. Davis

604 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/how-inventions-change-history-for-better-and-for-worse-kenneth-c-davis Invented in 1793, the cotton gin changed history for good and bad. By allowing one field hand to do the work of 10, it powered a new industr
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What Are Stem Cells? - Craig A. Kohn

2,335 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-are-stem-cells-craig-a-kohn Is personalized medicine for individual bodies in our future? Possibly -- with the use of stem cells, undifferentiated cells with the power to become any tissue in our bodies. Cr
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04:30 Popular
The Chemistry Of Cookies - Stephanie Warren

786 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-chemistry-of-cookies-stephanie-warren You stick cookie dough into an oven, and magically, you get a plate of warm, gooey cookies. Except it's not magic; it's science. Stephanie Warren explains via basic chem
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04:09 Popular
The Moon Illusion - Andrew Vanden Heuvel

819 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-moon-illusion-andrew-vanden-heuvel Have you noticed how the full moon looks bigger on the horizon than high overhead? Actually, the two images are exactly the same size -- so why do we perceive them differen
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Exploring Other Dimensions - Alex Rosenthal And George Zaidan

889 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/exploring-other-dimensions-alex-rosenthal-and-george-zaidan Imagine a two-dimensional world -- you, your friends, everything is 2D. In his 1884 novella, Edwin Abbott invented this world and called it Flatland. A
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The Nurdles' Quest For Ocean Domination - Kim Preshoff

840 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-nurdles-quest-for-ocean-domination-kim-preshoff Nurdles are the tiny, factory-made pellets that form the raw material for every plastic product that we use, from toys to toothbrushes. And while they look pre
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The Incredible Collaboration Behind The International Space Station - Tien Nguyen

640 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-incredible-collaboration-behind-the-international-space-station-tien-nguyen The International Space Station is roughly the size of a six-bedroom house and weighs more than 320 cars -- it's so large that no s
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The Infinite Life Of Pi - Reynaldo Lopes

599 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-infinite-life-of-pi-reynaldo-lopes The ratio of a circle's circumference to its diameter is always the same: 3.14159... and on and on (literally!) forever. This irrational number, pi, has an infinite number
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What Is Dyslexia? - Kelli Sandman-Hurley

585 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-is-dyslexia-kelli-sandman-hurley Dyslexia affects up to 1 in 5 people, but the experience of dyslexia isn't always the same. This difficulty in processing language exists along a spectrum -- one that doesn'
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History Through The Eyes Of The Potato - Leo Bear-McGuinness

996 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/history-through-the-eyes-of-the-potato-leo-bear-mcguinness Baked or fried, boiled or roasted, as chips or fries; at some point in your life you’ve probably eaten a potato. But potatoes have played a much more si
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05:44 Popular
The Sonic Boom Problem - Katerina Kaouri

1,023 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-causes-sonic-booms-katerina-kaouri Objects that fly faster than the speed of sound (like really fast planes) create a shock wave accompanied by a thunder-like noise: the sonic boom. These epic sounds can ca
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How Do Your Kidneys Work? - Emma Bryce

1,236 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-do-your-kidneys-work-emma-bryce After drinking a few glasses of water on a hot day, you might be struck with a sudden ... urge. Behind that feeling are two bean-shaped organs that work as fine-tuned internal
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Attack Of The Killer Algae - Eric Noel Muñoz

885 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/attack-of-the-killer-algae-eric-noel-munoz As benign as it may look up close, the tiny seaweed Caulerpa taxifolia can wreak quite a bit of havoc on coastal ecosystems. This super algae is very adaptable; it also
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Leeuwenhoek: The First Master of Microscopes

177 views / 0 likes - added 2 years ago

Go to https://curiositystream.com/microcosmos and use code "microcosmos" to sign up for CuriosityStream -- just $14.99 for the whole YEAR.Follow Journey to the Microcosmos:Twitter: https://twitter.com/journeytomicroFacebook: https://www.facebook.com/Journ
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The Controversial Origins Of The Encyclopedia - Addison Anderson

598 views / 0 likes - added 8 years ago

View full lesson: https://ed.ted.com/lessons/the-controversial-origins-of-the-encyclopedia-addison-anderson The first encyclopedia contained 70,000 entries and over 20,000,000 words. It was broken into 35 volumes written over the course of 3 decades. It w
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What's Hidden Among The Tallest Trees On Earth? - Wendell Oshiro

840 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-s-hidden-among-the-tallest-trees-on-earth-wendell-oshiro When Stephen Sillett was a boy, he took to the forests of Pennsylvania with his brother and grandmother. Looking up into the dense branches and leave
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Who Am I? A Philosophical Inquiry - Amy Adkins

1,149 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/who-am-i-a-philosophical-inquiry-amy-adkins Throughout the history of mankind, the subject of identity has sent poets to the blank page, philosophers to the agora and seekers to the oracles. These murky waters o
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How does an atom-smashing particle accelerator work? - Don Lincoln

540 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/how-does-an-atom-smashing-particle-accelerator-work-don-lincoln An atom smasher, or particle accelerator, collides atomic nuclei together at extremely cold temperatures, very low air pressure, and hyperbolically
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What Are The Universal Human Rights? - Benedetta Berti

1,283 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-are-the-universal-human-rights-benedetta-berti The basic idea of human rights is that each one of us, no matter who we are or where we are born, is entitled to the same basic rights and freedoms. That may s
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Can Wildlife Adapt To Climate Change? - Erin Eastwood

1,928 views / 3 likes - added 8 years ago

VIew full lesson: http://ed.ted.com/lessons/can-wildlife-adapt-to-climate-change-erin-eastwood With rising temperatures and seas, massive droughts, and changing landscapes, successfully adapting to climate change is increasingly important. For humans, thi
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03:28 Popular
Buffalo Buffalo Buffalo: One-word Sentences And How They Work - Emma Bryce

761 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/buffalo-buffalo-buffalo-one-word-sentences-and-how-they-work-emma-bryce ‘Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo’ is a grammatically correct sentence. How? Emma Bryce explains how this an
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03:51
How do cancer cells behave differently from healthy ones? - George Zaidan

669 views / 1 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/how-do-cancer-cells-behave-differently-from-healthy-ones-george-zaidan How do cancer cells grow? How does chemotherapy fight cancer (and cause negative side effects)? The answers lie in cell division. George Zai
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Mysteries Of Vernacular: Jade - Jessica Oreck And Rachael Teel

536 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/mysteries-of-veracular-jade-jessica-oreck-and-rachael-teel Now known for its beauty and green hue, the stone jade was previously thought to espouse magical properties, such as kidney treatment. Jessica Oreck and
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What happened to trial by jury? - Suja A. Thomas

606 views / 1 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/what-happened-to-trial-by-jury-suja-a-thomas In the United States today, juries decide less than 4% of criminal cases and less than 1% of civil cases filed in court. At the same time, jury systems in other count
06:04 $How does fracking work? - Mia Nacamulli$
How does fracking work? - Mia Nacamulli

677 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/how-does-fracking-work-mia-nacamulli Deep underground lie stores of once-inaccessible natural gas. There’s a technology, called hydraulic fracturing, or “fracking,” that can extract this natural gas, potentially
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Corruption, Wealth And Beauty: The History Of The Venetian Gondola - Laura Morelli

802 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/corruption-wealth-and-beauty-the-history-of-the-venetian-gondola-laura-morelli It’s hard to imagine Venice without the curious, banana-shaped gondolas that glide down the canals. How did these boats come to be t
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Light Seconds, Light Years, Light Centuries: How To Measure Extreme Distances - Yuan-Sen Ting

964 views / 2 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-do-we-measure-distances-in-space-yuan-sen-ting When we look at the sky, we have a flat, two-dimensional view. So how do astronomers figure the distances of stars and galaxies from Earth? Yuan-Sen Ting shows
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The Psychology Of Narcissism - W. Keith Campbell

557 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-psychology-of-narcissism-w-keith-campbell Narcissism isn’t just a personality type that shows up in advice columns; it’s actually a set of traits classified and studied by psychologists. But what causes it?
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Can you solve the airplane riddle? - Judd A. Schorr

1,166 views / 2 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-airplane-riddle-judd-a-schorr Professor Fukanō, the famous scientist, has embarked on a new challenge – piloting around the world in a plane of his own design. There’s just one problem: there's
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How Playing An Instrument Benefits Your Brain - Anita Collins

893 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-playing-an-instrument-benefits-your-brain-anita-collins When you listen to music, multiple areas of your brain become engaged and active. But when you actually play an instrument, that activity becomes more
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Would winning the lottery make you happier? - Raj Raghunathan

956 views / 2 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/would-winning-the-lottery-make-you-happier-raj-raghunathan Imagine winning a multi-million dollar lottery tomorrow. If you’re like many of us, you’d be ecstatic, unable to believe your good luck. But
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Gerrymandering: How drawing jagged lines can impact an election - Christina Greer

689 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/gerrymandering-how-drawing-jagged-lines-can-impact-an-election-christina-greer District lines, and the groups of voters within them, may seem arbitrary, but a lot of thought (and political bickering) is put into
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Urbanization And The Evolution Of Cities Across 10,000 Years - Vance Kite

1,100 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/urbanization-and-the-future-of-cities-vance-kite About 10,000 years ago, hunter-gatherers, aided by rudimentary agriculture, moved to semi-permanent villages and never looked back. With further developments came
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How Stress Affects Your Brain - Madhumita Murgia

968 views / 3 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-stress-affects-your-brain-madhumita-murgia Stress isn’t always a bad thing; it can be handy for a burst of extra energy and focus, like when you’re playing a competitive sport or have to speak in public. But
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The True Story Of 'true' - Gina Cooke

733 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-true-story-of-true-gina-cooke The older the word, the longer (and more fascinating) the story. With roots in Old English, 'true' shares etymological ancestors with words like betroth and truce...but also wit
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Is there a limit to technological progress? - Clément Vidal

727 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/is-there-a-limit-to-technological-progress-clement-vidal Many generations have felt they’ve reached the pinnacle of technological advancement. Yet, if you look back 100 years, the technologies we take for grante
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How Does Your Smartphone Know Your Location? - Wilton L. Virgo

854 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-does-your-smartphone-know-your-location-wilton-l-virgo GPS location apps on a smartphone can be very handy when mapping a travel route or finding nearby events. But how does your smartphone know where you ar
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03:25 Popular
What Does The Liver Do? - Emma Bryce

1,675 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-does-the-liver-do-emma-bryce There’s a factory inside you that weighs about 1.4 kilograms and runs for 24 hours a day. It’s your liver: the heaviest organ in your body, which simultaneously acts as a storeh
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An Athlete Uses Physics To Shatter World Records - Asaf Bar-Yosef

814 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/an-athlete-uses-physics-to-shatter-world-records-asaf-bar-yosef When Dick Fosbury couldn't compete against the skilled high jumpers at his college, he tried jumping in a different way -- backwards. Fosbury impro
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How To Grow A Bone - Nina Tandon

1,026 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-to-grow-a-bone-nina-tandon Can you grow a human bone outside the human body? The answer may soon be yes. Nina Tandon explores the possibility by examining how bones naturally grow inside the body, and illumi
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The Contributions Of Female Explorers - Courtney Stephens

588 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-contributions-of-female-explorers-courtney-stephens During the Victorian Age, women were unlikely to become great explorers, but a few intelligent, gritty and brave women made major contributions to the stud
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How North America Got Its Shape - Peter J. Haproff

1,020 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/how-north-america-got-its-shape-peter-j-haproff North America didn’t always have its familiar shape, nor its famed mountains, canyons, and plains: all of that was once contained in an unrecognizable mass, buried
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A Curable Condition That Causes Blindness - Andrew Bastawrous

520 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/a-curable-condition-that-causes-blindness-andrew-bastawrous An estimated 20 million cases of blindness worldwide are caused by cataracts, a curable condition affecting the lens that focuses images onto the eye’s
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How the Band-Aid was invented | Moments of Vision 3 - Jessica Oreck

1,220 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/how-the-band-aid-was-invented-moments-of-vision-3-jessica-oreck It is estimated that Johnson & Johnson have made an astounding 100 billion Band-Aids since they were invented in 1920. But where did the idea come
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How Pandemics Spread

482 views / 1 likes - added 6 years ago

In our increasingly globalized world, a single infected person can board a plane and spread a virus across continents. Mark Honigsbaum describes the history of pandemics and how that knowledge can help halt future outbreaks. "How Pandemics Spread" is a le
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How Cosmic Rays Help Us Understand The Universe - Veronica Bindi

721 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-cosmic-rays-help-us-understand-the-universe-veronica-bindi We only know 4% of what the universe is made up of. Can we also know what lies beyond our galaxy ... and if there are undiscovered forms of matter?
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Why Is This Painting So Captivating? - James Earle And Christina Bozsik

837 views / 0 likes - added 8 years ago

View full lesson: https://ed.ted.com/lessons/why-is-this-painting-so-captivating-james-earle-and-christina-bozsik On first glance, the painting “Las Meninas” (“The Maids of Honor”) might not seem terribly special, but it’s actually one of the most analyze
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Mysteries Of Vernacular: Odd - Jessica Oreck And Rachael Teel

613 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/mysteries-of-vernacular-odd-jessica-oreck-and-rachael-teel Whether we're talking all things unusual or mathematical, the origins of the word odd point to the Indo-European root uzdho, which means pointing upward
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What On Earth Is Spin? - Brian Jones

712 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-on-earth-is-spin-brian-jones Why does the Earth spin? Does a basketball falling from a spinning merry-go-round fall in a curve, as it appears to, or in a straight line? How can speed be manipulated while sp
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Should You Trust Unanimous Decisions? - Derek Abbott

871 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/should-you-trust-unanimous-decisions-derek-abbott Imagine a police lineup where ten witnesses are asked to identify a bank robber they glimpsed fleeing the scene. If six of them pick the same person, there’s a g
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How We Think Complex Cells Evolved - Adam Jacobson

852 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-we-think-complex-cells-evolved-adam-jacobson Imagine you swallowed a small bird and suddenly gained the ability to fly … or you ate a cobra and were able to spit poisonous venom! Well, throughout the history
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What Is An Aurora? - Michael Molina

646 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-epic-solar-winds-make-brilliant-polar-lights-michael-molina Why do we see those stunning lights in the northern- and southernmost portions of the night sky? The Aurora Borealis and Aurora Australis occur whe
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When To Use

541 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/when-to-use-me-myself-and-i-emma-bryce Me, myself, and I. You may be tempted to use these words interchangeably, because they all refer to the same thing. But in fact, each one has a specific role in a sentence:
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The Wars That Inspired Game Of Thrones - Alex Gendler

645 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-wars-that-inspired-game-of-thrones-alex-gendler Beginning around 1377, medieval England was shaken by a power struggle between two noble families, which spanned generations and involved a massive cast of cha
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Jellyfish predate dinosaurs. How have they survived so long? - David Gruber

1,274 views / 5 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/jellyfish-predate-dinosaurs-how-have-they-survived-so-long-david-gruber Some are longer than a blue whale. Others are barely larger than a grain of sand. One species unleashes one of the most deadly venoms on ea
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Will Future Spacecraft Fit In Our Pockets? - Dhonam Pemba

871 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/will-future-spaceships-fit-in-our-pockets-dhonam-pemba When you picture a rocket, you might imagine a giant ship carrying lots of fuel, people and supplies. But what if the next wave of spacecraft were small eno
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Could Anyone Make A Jackson Pollock Painting? - Sarah Rosenthal

1,037 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/could-just-anyone-make-a-jackson-pollock-painting-sarah-rosenthal If you visit a museum with a collection of modern and contemporary art, you’re likely to see works that sometimes elicit the response, “My cat co
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Who IS Sherlock Holmes? - Neil McCaw

981 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/who-is-sherlock-holmes-neil-mccaw More than a century after first emerging into the fogbound, gaslit streets of Victorian London, Sherlock Holmes is universally recognizable. And yet many of his most recognizabl
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Is there a reproducibility crisis in science? - Matt Anticole

494 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/is-there-a-reproducibility-crisis-in-science-matt-anticole Published scientific studies can motivate research, inspire products, and inform policy. However, recent studies that examined dozens of published pharm
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The genius of Mendeleev's periodic table - Lou Serico

2,114 views / 1 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/the-genius-of-mendeleev-s-periodic-table-lou-serico The elements had been listed and carefully arranged before Dmitri Mendeleev. They had even been organized by similar properties before. So why is Mendeelev's p
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The Famously Difficult Green-eyed Logic Puzzle - Alex Gendler

1,353 views / 2 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-famously-difficult-green-eyed-logic-puzzle-alex-gendler One hundred green-eyed logicians have been imprisoned on an island by a mad dictator. Their only hope for freedom lies in the answer to one famously di
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What Happens When Your DNA Is Damaged? - Monica Menesini

627 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-happens-when-your-dna-is-damaged-monica-menesini The DNA in just one of your cells gets damaged tens of thousands of times per day. Because DNA provides the blueprint for the proteins your cells need to fun
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The Game-changing Amniotic Egg - April Tucker

800 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-game-changing-amniotic-egg-april-tucker 350 million years ago, eggs could not survive far from water, therefore animals were water-bound. That is, until the amniotic egg, which allowed animals to live a full
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How Stress Affects Your Body - Sharon Horesh Bergquist

1,243 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-stress-affects-your-body-sharon-horesh-bergquist Our hard-wired stress response is designed to gives us the quick burst of heightened alertness and energy needed to perform our best. But stress isn’t all goo
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The Secret Lives Of Baby Fish - Amy McDermott

857 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-secret-lives-of-baby-fish-amy-mcdermott Coral reef fish, like the yellow tang surgeonfish, begin life in a fascinating and weird way – as tiny floating larvae! These babies are capable of drifting thousands
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Mansa Musa, One Of The Wealthiest People Who Ever Lived - Jessica Smith

911 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/mansa-musa-one-of-the-wealthiest-people-who-ever-lived-jessica-smith Mansa Musa, the 14th century African king of the Mali Empire, is said to have amassed a fortune that possibly made him one of the wealthiest p
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The genius of Marie Curie - Shohini Ghose

1,022 views / 7 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/the-genius-of-marie-curie-shohini-ghose Marie Skłodowska Curie’s revolutionary research laid the groundwork for our understanding of physics and chemistry, blazing trails in oncology, technology, medicine, and n
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How To Fossilize...yourself - Phoebe A. Cohen

561 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-to-fossilize-yourself-phoebe-a-cohen You can aspire to great things in life, but how about in death? Could you be one of the world's greatest fossils many years from now? To ensure being found by a future pa
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The ferocious predatory dinosaurs of Cretaceous Sahara - Nizar Ibrahim

610 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/the-ferocious-predatory-dinosaurs-of-cretaceous-sahara-nizar-ibrahim In Cretaceous times (around 100 million years ago), North Africa was home to a huge river system and a bizarre menagerie of giant prehistoric
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What Is The Silver Tsunami?

661 views / 4 likes - added 5 years ago

Something big is coming…and it's called The Silver Tsunami? Check out Hollywood Health & Society: https://hollywoodhealthandsociety.org Subscribe: https://bit.ly/SubLifeNoggin | Get your exclusive Life Noggin merch: http://keeponthinking.co Follow Life No
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Can you solve the pirate riddle? - Alex Gendler

1,823 views / 3 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-pirate-riddle-alex-gendler It’s a good day to be a pirate. Amaro and his four mateys – Bart, Charlotte, Daniel, and Eliza have struck gold – a chest with 100 coins. But now, they must divvy up
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The Scientific Origins Of The Minotaur - Matt Kaplan

792 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-scientific-origins-of-the-minotaur-matt-kaplan The myth of the Minotaur tells the story of an enraged beast forever wandering the corridors of a damp labyrinth, filled with a rage so intense that its deafeni
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What’s The Big Deal With Gluten? - William D. Chey

672 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-s-the-big-deal-with-gluten-william-d-chey If you've been to a restaurant in the last few years, you’ve likely seen the words gluten-free written somewhere on the menu. But what exactly is gluten, and why ca
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How Many Ways Can You Arrange A Deck Of Cards? - Yannay Khaikin

772 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-many-ways-can-you-arrange-a-deck-of-cards-yannay-khaikin One deck. Fifty-two cards. How many arrangements? Let's put it this way: Any time you pick up a well shuffled deck, you are almost certainly holding a
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What Does It Mean To Be A Refugee? - Benedetta Berti And Evelien Borgman

795 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-does-it-mean-to-be-a-refugee-benedetta-berti-and-evelien-borgman About 60 million people around the globe have been forced to leave their homes to escape war, violence and persecution. The majority have bec
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How Magellan circumnavigated the globe - Ewandro Magalhaes

821 views / 1 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/how-magellan-circumnavigated-the-globe-ewandro-magalhaes On September 6, 1522, the "Victoria" sailed into harbor in southern Spain. The battered vessel and its 18 sailors were all that remained of a fleet that h
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What You Might Not Know About The Declaration Of Independence - Kenneth C. Davis

896 views / 2 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-you-might-not-know-about-the-declaration-of-independence-kenneth-c-davis In June 1776, a little over a year after the start of the American Revolutionary War, the US Continental Congress huddled together in
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What Is The Shape Of A Molecule? - George Zaidan And Charles Morton

1,443 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-is-the-shape-of-a-molecule-george-zaidan-and-charles-morton A molecule is nearly all empty space, apart from the extremely dense nuclei of its atoms and the clouds of electrons that bond them together. When
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The Past, Present And Future Of The Bubonic Plague - Sharon N. DeWitte

768 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-past-present-and-future-of-the-bubonic-plague-sharon-n-dewitte The bubonic plague, which killed around 1/5 of the world’s population in the 14th century, is still around today -- but it now claims only a few
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The Benefits Of A Bilingual Brain - Mia Nacamulli

1,316 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-speaking-multiple-languages-benefits-the-brain-mia-nacamulli It’s obvious that knowing more than one language can make certain things easier — like traveling or watching movies without subtitles. But are the
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How Do Carbohydrates Impact Your Health? - Richard J. Wood

1,489 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-do-carbohydrates-impact-your-health-richard-j-wood The things we eat and drink on a daily basis can impact our health in big ways. Too many carbohydrates, for instance, can lead to insulin resistance, which
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Light Waves, Visible And Invisible - Lucianne Walkowicz

1,532 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/light-waves-visible-and-invisible-lucianne-walkowicz Each kind of light has a unique wavelength, but human eyes can only perceive a tiny slice of the full spectrum -- the very narrow range from red to violet. Mi
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The Fight For The Right To Vote In The United States - Nicki Beaman Griffin

595 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-fight-for-the-right-to-vote-in-the-united-states-nicki-beaman-griffin In the United States today, if you are over eighteen, a citizen, and the resident of a state, you can vote (with some exceptions). So, ho
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The Five Major World Religions - John Bellaimey

867 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-five-major-world-religions-john-bellaimey It's perfectly human to grapple with questions, like 'Where do we come from?' and 'How do I live a life of meaning?' These existential questions are central to the f
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Einstein's Brilliant Mistake: Entangled States - Chad Orzel

682 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/einstein-s-brilliant-mistake-entangled-states-chad-orzel When you think about Einstein and physics, E=mc^2 is probably the first thing that comes to mind. But one of his greatest contributions to the field actua
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Football Physics: The

892 views / 3 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/football-physics-the-impossible-free-kick-erez-garty In 1997, Brazilian football player Roberto Carlos set up for a 35 meter free kick with no direct line to the goal. Carlos’s shot sent the ball flying wide of
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How A Single-celled Organism Almost Wiped Out Life On Earth - Anusuya Willis

1,895 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/how-a-single-celled-organism-almost-wiped-out-life-on-earth-anusuya-willis There’s an organism that changed the world. It caused the first mass extinction in Earth’s history … and also paved the way for complex
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How to master your sense of smell - Alexandra Horowitz

811 views / 1 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/how-to-master-your-sense-of-smell-alexandra-horowitz Some perfumers can distinguish individual odors in a fragrance made of hundreds of scents; tea-experts have been known to sniff out the exact location of a pa
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Music And Creativity In Ancient Greece - Tim Hansen

1,162 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/music-and-creativity-in-ancient-greece-tim-hansen You think you love music? You have nothing on the Ancient Greek obsession. Every aspect of Greek life was punctuated by song: history, poetry, theater, sports an
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A Poetic Experiment: Walt Whitman, Interpreted By Three Animators - Justin Moore

670 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/a-poetic-experiment-walt-whitman-interpreted-by-three-animators-justin-moore Take a journey through Walt Whitman's poem 'A Noiseless Patient Spider' with the help of three animators who each used a different ani
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How To Draw A Butterfly Skeleton For Halloween

181 views / 0 likes - added 1 year ago

Yay! Today, we're learning how to draw a cute butterfly skeleton! This lesson is really fun and a great decoration for Halloween! We hope you and your kids enjoy customizing this lesson. Art Supplies ~ This is a list of the supplies we used, but feel free
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Particles And Waves: The Central Mystery Of Quantum Mechanics - Chad Orzel

827 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/particles-and-waves-the-central-mystery-of-quantum-mechanics-chad-orzel One of the most amazing facts in physics is that everything in the universe, from light to electrons to atoms, behaves like both a particle
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Mysteries Of Vernacular: Lady - Jessica Oreck And Rachael Teel

612 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/mysteries-of-vernacular-lady-jessica-oreck-and-rachael-teel Why do we call women ladies? Well, etymologically-speaking, the word comes from the Old English words for hlaf (bread) and daege (maid), which, combine
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What Is Metallic Glass? - Ashwini Bharathula

1,356 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-is-metallic-glass-ashwini-bharathula Steel and plastic are essential to much of our infrastructure and technology. Steel is strong and hard, but difficult to shape intricately. Plastic can take on just abou
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The Microbial Jungles All Over The Place (and You) - Scott Chimileski And Roberto Kolter

689 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-microbial-jungles-all-over-the-place-and-you-scott-chimileski-and-roberto-kolter As we walk through our daily environments, we’re surrounded by exotic creatures that are too small to see with the naked eye.
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Why Don't Oil And Water Mix? - John Pollard

1,137 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-don-t-oil-and-water-mix-john-pollard Salt dissolves in water; oil does not. But why? You can think of that glass of water as a big, bumpin' dance party where the water molecules are always switching dance pa
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Why Wasn’t The Bill Of Rights Originally In The US Constitution? - James Coll

847 views / 4 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-wasn-t-the-bill-of-rights-originally-in-the-us-constitution-james-coll When you think of the US Constitution, what’s the first thing that comes to mind? Free speech? The right to bear arms? These passages ar
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What's the fastest way to alphabetize your bookshelf? - Chand John

814 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/what-s-the-fastest-way-to-alphabetize-your-bookshelf-chand-john You work at the college library. You’re in the middle of a quiet afternoon when suddenly, a shipment of 1,280 books arrives. The books are in a str
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Debunking The Myths Of OCD - Natascha M. Santos

1,735 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/debunking-the-myths-of-ocd-natascha-m-santos There’s a common misconception that if you like to meticulously organize your things, keep your hands clean, or plan out your weekend to the last detail, you might be
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Why The Metric System Matters - Matt Anticole

1,600 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/why-the-metric-system-matters-matt-anticole For the majority of recorded human history, units like the weight of a grain or the length of a hand weren’t exact and varied from place to place. Now, consistent meas
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RNAi: Slicing, Dicing And Serving Your Cells - Alex Dainis

715 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/rnai-slicing-dicing-and-serving-your-cells-alex-dainis RNA, the genetic messenger, makes sure the DNA recipe gives your cells exactly what they ordered. But sometimes that means inhibiting some other RNA that go
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How Brain Parasites Change Their Host's Behavior - Jaap De Roode

795 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-parasites-change-their-host-s-behavior-jaap-de-roode The biggest challenge in a parasite’s life is to move from one host to another. Intriguingly, many parasites have evolved the ability to manipulate the be
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Plato’s Allegory Of The Cave - Alex Gendler

1,050 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/plato-s-allegory-of-the-cave-alex-gendler Twenty four hundred years ago, Plato, one of history’s most famous thinkers, said life is like being chained up in a cave forced to watch shadows flitting across a stone
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How Brass Instruments Work - Al Cannon

898 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-brass-instruments-work-al-cannon What gives the trumpet its clarion ring and the tuba its gut shaking oompah-pah? And what makes the trombone so jazzy? Al Cannon shows how these answers lie not in the brass
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Why Is Bread Fluffy, Vinegar Sour, And Swiss Cheese Holey? - Erez Garty

1,329 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-is-bread-fluffy-vinegar-sour-and-swiss-cheese-holey-erez-garty Where does bread get its fluffiness? Swiss cheese its holes? And what makes vinegar so sour? These foods may taste completely different, but all
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If Matter Falls Down, Does Antimatter Fall Up? - Chloé Malbrunot

660 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/if-matter-falls-down-does-antimatter-fall-up-chloe-malbrunot Like positive and negative, or debit and credit, matter and antimatter are equal and opposite. So if matter falls down, does antimatter fall up? Chloé
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The Loathsome, Lethal Mosquito - Rose Eveleth

1,235 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-loathsome-lethal-mosquito-rose-eveleth Everyone hates mosquitos. Besides the annoying buzzing and biting, mosquito-borne diseases like malaria kill over a million people each year (plus horses, dogs and cats
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The Paradox Of Value - Akshita Agarwal

893 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/the-paradox-of-value-akshita-agarwal Imagine you’re on a game show and you can choose between two prizes: a diamond … or a bottle of water. It’s an easy choice – the diamonds are more valuable. But if given the
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What Is Leukemia? - Danilo Allegra And Dania Puggioni

935 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-is-leukemia-danilo-allegra-and-dania-puggioni Stem cells found in the bone marrow are crucial for our health because they are needed to become new blood cells that sustain and protect our bodies. But when t
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What happens during a heart attack? - Krishna Sudhir

1,697 views / 1 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/what-happens-during-a-heart-attack-krishna-sudhir Approximately seven million people around the world die from heart attacks every year. And cardiovascular disease, which causes heart attacks and other problems
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The history of the Cuban Missile Crisis - Matthew A. Jordan

846 views / 1 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/the-history-of-the-cuban-missile-crisis-matthew-a-jordan Imagine going about your life knowing that, at any given moment, you and everyone you know could be wiped out without warning at the push of a button. Thi
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Is light a particle or a wave? - Colm Kelleher

1,633 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/is-light-a-particle-or-a-wave-colm-kelleher Can we accurately describe light as exclusively a wave or just a particle? Are the two mutually exclusive? In this third part of his series on light and color, Colm Ke
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What Creates A Total Solar Eclipse? - Andy Cohen

882 views / 4 likes - added 8 years ago

View full lesson here: http://ed.ted.com/lessons/what-creates-a-total-solar-eclipse-andy-cohen How can the shadow of the tiny moon eclipse the sight of the gargantuan sun? By sheer coincidence, the disc of the sun is 400x larger than the disc of the moon,
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The Death Of The Universe - Renée Hlozek

576 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-death-of-the-universe-renee-hlozek The shape, contents and future of the universe are all intricately related. We know that it's mostly flat; we know that it's made up of baryonic matter (like stars and plan
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A Trip Through Space To Calculate Distance - Heather Tunnell

1,037 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/a-trip-through-space-to-calculate-distance-heather-tunnell Imagine two aliens racing across outer space to their moon. Who can we deem the fastest alien? With DIRT -- or the equation Distance = Rate x Time -- we
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Flying over the melting arctic made climate change feel much more urgent

549 views / 1 likes - added 7 years ago

Why ocean ice matters. Follow Johnny as he makes the new Vox series, "Borders" Facebook: https://goo.gl/l0x5cA Instagram: https://goo.gl/CduwlO Subscribe to our channel! http://goo.gl/0bsAjO The Arctic is warming twice as fast as the rest of the globe. Ev
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The Science Of Skin Color - Angela Koine Flynn

1,096 views / 0 likes - added 8 years ago

View full lesson: https://ed.ted.com/lessons/the-science-of-skin-color-angela-koine-flynn When ultraviolet sunlight hits our skin, it affects each of us differently. Depending on skin color, it’ll take only minutes of exposure to turn one person beetroot-
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Did Shakespeare Write His Plays? - Natalya St. Clair And Aaron Williams

1,100 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/did-shakespeare-write-his-plays-natalya-st-clair-and-aaron-williams Some people question whether Shakespeare really wrote the works that bear his name – or whether he even existed at all. Could it be true that t
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How People Rationalize Fraud - Kelly Richmond Pope

987 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/how-people-rationalize-fraud-kelly-richmond-pope If you ask people whether they think stealing is wrong, most of them would answer yes. And yet, in 2013, organizations all over the world lost an estimated total
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How To Build A Fictional World - Kate Messner

673 views / 2 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-to-build-a-fictional-world-kate-messner Why is J.R.R. Tolkien's Lord of the Rings trilogy so compelling? How about The Matrix or Harry Potter? What makes these disparate worlds come alive are clear, consiste
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The Haber Process - Daniel D. Dulek

1,098 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-chemical-reaction-that-feeds-the-world-daniel-d-dulek How do we grow crops quickly enough to feed the Earth's billions? It's called the Haber process, which turns the nitrogen in the air into ammonia, easily
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How Blood Pressure Works - Wilfred Manzano

1,902 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-blood-pressure-works-wilfred-manzano If you lined up all the blood vessels in your body, they’d be 60 thousand miles long. And every day, they carry the equivalent of over two thousand gallons of blood to th
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The Most Groundbreaking Scientist You've Never Heard Of - Addison Anderson

720 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-most-groundbreaking-scientist-you-ve-never-heard-of-addison-anderson Seventeenth-century Danish geologist Nicolas Steno earned his chops at a young age, studying cadavers and drawing anatomic connections bet
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The Real Story Behind Archimedes’ Eureka! - Armand D'Angour

1,737 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-real-story-behind-archimedes-eureka-armand-d-angour When you think of Archimedes’ Eureka moment, you probably imagine a man in a bathtub, right? As it turns out, there's much more to the story. Armand D'Ango
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The Egyptian Book of the Dead: A guidebook for the underworld - Tejal Gala

720 views / 1 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/the-egyptian-book-of-the-dead-tejal-gala Ancient Egyptians believed that in order to become immortal after death, a spirit must first pass through the underworld — a realm of vast caverns, lakes of fire, and mag
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The Higgs Field, Explained - Don Lincoln

778 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-higgs-field-explained-don-lincoln One of the most significant scientific discoveries of the early 21st century is surely the Higgs boson, but the boson and the Higgs Field that allows for that magic particle
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Rosalind Franklin: DNA's Unsung Hero - Cláudio L. Guerra

1,062 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/rosalind-franklin-dna-s-unsung-hero-claudio-l-guerra The discovery of the structure of DNA was one of the most important scientific achievements in human history. The now-famous double helix is almost synonymous
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The exceptional life of Benjamin Banneker - Rose-Margaret Ekeng-Itua

937 views / 9 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/the-exceptional-life-of-benjamin-banneker-rose-margaret-ekeng-itua Born in 1731 to freed slaves on a farm in Baltimore, Benjamin Banneker was obsessed with math and science. And his appetite for knowledge only g
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The Origins Of Ballet - Jennifer Tortorello And Adrienne Westwood

870 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-origins-of-ballet-jennifer-tortorello-and-adrienne-westwood Can you imagine a party where every movement and every visual detail were governed by a complex system of rules and procedures? For centuries, such
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Big Data - Tim Smith

790 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/exploration-on-the-big-data-frontier-tim-smith There is a mind-boggling amount of data floating around our society. Physicists at CERN have been pondering how to store and share their ever more massive data for
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The Coelacanth: A Living Fossil Of A Fish - Erin Eastwood

1,083 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-coelacanth-a-living-fossil-of-a-fish-erin-eastwood The coelacanth, a prehistoric fish that was mistakenly thought to have gone extinct at the same time as the dinosaurs, has managed to stick around our seas
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How Exposing Anonymous Companies Could Cut Down On Crime - Global Witness

708 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-exposing-anonymous-companies-could-cut-down-on-crime-global-witness Companies are artificial entities created to allow real people to do business. But, unfortunately, there are some types of companies that a
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How Do Solar Panels Work? - Richard Komp

1,901 views / 3 likes - added 8 years ago

View full lesson: https://ed.ted.com/lessons/how-do-solar-panels-work-richard-komp The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world cou
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Rhythm In A Box: The Story Of The Cajon Drum - Paul Jennings

856 views / 1 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/rhythm-in-a-box-the-story-of-the-cajon-drum-paul-jennings Many modern musical instruments are complicated pieces of machinery with many moving parts. But the cajon is simply a drum and a stand and a seat all in
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What Can Schrödinger's Cat Teach Us About Quantum Mechanics? - Josh Samani

795 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-can-schrodinger-s-cat-teach-us-about-quantum-mechanics-josh-samani The classical physics that we encounter in our everyday, macroscopic world is very different from the quantum physics that governs systems
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Mysteries Of Vernacular: Ukulele - Jessica Oreck And Rachael Teel

534 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/mysteries-of-vernacular-ukulele-jessica-oreck-and-rachael-teel When 19th century Portuguese travelers landed in Hawaii with a small four-stringed guitar, a member of the king's court, nicknamed Jumping Flea, or
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What Color Is Tuesday? Exploring Synesthesia - Richard E. Cytowic

616 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-color-is-tuesday-exploring-synesthesia-richard-e-cytowic How does one experience synesthesia -- the neurological trait that combines two or more senses? Synesthetes may taste the number 9 or attach a color
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Why Tragedies Are Alluring - David E. Rivas

624 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-tragedies-are-alluring-david-e-rivas The story goes something like this: A royal, rich, or righteous individual — who is otherwise a lot like us — makes a mistake that sends his or her life spiraling into ru
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The history of chocolate - Deanna Pucciarelli

1,111 views / 2 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/the-history-of-chocolate-deanna-pucciarelli If you can’t imagine life without chocolate, you’re lucky you weren’t born before the 16th century. Until then, chocolate only existed as a bitter, foamy drink in Meso
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Is Our Climate Headed For A Mathematical Tipping Point? - Victor J. Donnay

636 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/is-our-climate-headed-for-mathematical-chaos-victor-j-donnay Scientists have warned that as CO2 levels in the atmosphere rise an increase in Earth’s temperature by even two degrees could lead to catastrophic eff
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Can You Solve The Frog Riddle? - Derek Abbott

1,724 views / 2 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-frog-riddle-derek-abbott You’re stranded in a rainforest, and you’ve eaten a poisonous mushroom. To save your life, you need an antidote excreted by a certain species of frog. Unfortunately, on
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04:46 Popular
Gravity And The Human Body - Jay Buckey

1,190 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/gravity-and-the-human-body-jay-buckey Our bodies function necessarily under the presence of gravity; how blood pumps, a sense of balance and bone growth are all due to life in a world where gravity is an inescap
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Bird Migration, A Perilous Journey - Alyssa Klavans

987 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/bird-migration-a-perilous-journey-alyssa-klavans Nearly 200 species of songbirds migrate south for winter, some traveling up to 7,000 miles. No easy task, the annual journey is dangerous to birds due to landscap
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The History Of The Barometer (and How It Works) - Asaf Bar-Yosef

1,175 views / 2 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/the-history-of-the-barometer-and-how-it-works-asaf-bar-yosef A barometer is an instrument that measures air pressure, allowing weather forecasters and scientists to better predict extreme weather events. Despite
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How to squeeze electricity out of crystals - Ashwini Bharathula

1,128 views / 2 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/how-to-squeeze-electricity-out-of-crystals-ashwini-bharathula It might sound like science fiction, but if you press on a crystal of sugar, it will actually generate its own electricity. This simple crystal can a
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A Different Way To Visualize Rhythm - John Varney

962 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/a-different-way-to-visualize-rhythm-john-varney In standard notation, rhythm is indicated on a musical bar line. But there are other ways to visualize rhythm that can be more intuitive. John Varney describes the
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Feedback Loops: How Nature Gets Its Rhythms - Anje-Margriet Neutel

1,860 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/feedback-loops-how-nature-gets-its-rhythms-anje-margriet-neutel While feedback loops are a bummer at band practice, they are essential in nature. What does nature’s feedback look like, and how does it build the
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What causes kidney stones? - Arash Shadman

1,428 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/what-causes-kidney-stones-arash-shadman The biggest kidney stone on record weighed more than a kilogram and was 17 centimeters in diameter. The patient didn’t actually swallow a stone the size of a coconut; kidn
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The left brain vs. right brain myth - Elizabeth Waters

1,138 views / 2 likes - added 6 years ago

View full lesson: https://ed.ted.com/lessons/the-left-brain-vs-right-brain-myth-elizabeth-waters The human brain is visibly split into a left and right side. This structure has inspired one of the most pervasive ideas about the brain: that the left side c
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The Origin Of Countless Conspiracy Theories - PatrickJMT

533 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-origin-of-countless-conspiracy-theories-patrickjmt Check out PatrickJMT's YouTube channel here: https://www.youtube.com/user/patrickJMT Why can we find geometric shapes in the night sky? How can we know that
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The Physics Of the Most Difficult Ballet Move

832 views / 1 likes - added 8 years ago

In the third act of "Swan Lake", the Black Swan pulls off a seemingly endless series of turns, bobbing up and down on one pointed foot and spinning around and around and around ... thirty-two times. How is this move — which is called a fouetté
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Got Seeds? Now Add Bleach, Acid And Sandpaper - Mary Koga

1,333 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/got-seeds-just-add-bleach-acid-and-sandpaper-mary-koga For a seed to start growing, its embryo must emerge from its hard coat. In nature the embryo is aided by frost and animal digestion -- but humans can help t
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What happens to our bodies after we die? - Farnaz Khatibi Jafari

686 views / 0 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/what-happens-to-our-bodies-after-we-die-farnaz-khatibi-jafari Since the dawn of humanity, an estimated 100.8 billion people have lived and died, a number that increases by about 0.8% of the world’s population ea
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The Surprising Reason You Feel Awful When You're Sick - Marco A. Sotomayor

905 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-surprising-reason-you-feel-awful-when-you-re-sick-marco-a-sotomayor It starts with a tickle in your throat that becomes a cough. Your muscles begin to ache, you grow irritable, and you lose your appetite. It
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What Happens When Continents Collide? - Juan D. Carrillo

675 views / 2 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-happens-when-continents-collide-juan-d-carrillo Tens of millions of years ago, plate tectonics set North and South America on an unavoidable collision course that would change the face of the Earth and spel
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Dark matter: The matter we can't see - James Gillies

1,058 views / 1 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/dark-matter-the-matter-we-can-t-see-james-gillies The Greeks had a simple and elegant formula for the universe: just earth, fire, wind, and water. Turns out there's more to it than that -- a lot more. Visible ma
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Why do airlines sell too many tickets? - Nina Klietsch

657 views / 0 likes - added 7 years ago

View full lesson on ed.ted.com: http://ed.ted.com/lessons/why-do-airlines-sell-too-many-tickets-nina-klietsch Have you ever sat in a doctor’s office for hours, despite having an appointment? Has a hotel turned down your reservation because it’s full? Have
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Mysteries Of Vernacular: Yankee - Jessica Oreck And Rachael Teel

581 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/mysteries-of-vernacular-yankee-jessica-oreck-and-rachael-teel Is it a doodle dandy? A baseball team? The origins of the word yankee are unclear, though its usage in America as a pejorative is well-documented. Je
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How We Conquered The Deadly Smallpox Virus - Simona Zompi

932 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-we-conquered-the-deadly-smallpox-virus-simona-zompi For 10,000 years, humanity suffered from the scourge of smallpox. The virus killed almost a third of its victims within two weeks and left survivors horrib
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Who Won The Space Race? - Jeff Steers

821 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-was-the-point-of-the-space-race-jeff-steers On October 4, 1957, the Soviet Union launched the satellite Sputnik and, with it, an international space race. The United States and the Soviet Union rushed to de
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How Did Clouds Get Their Names? - Richard Hamblyn

891 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-did-clouds-get-their-names-richard-hamblyn The study of clouds has always been a daydreamer’s science, aptly founded by a thoughtful young man whose favorite activity was staring out of the window at t
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How does caffeine keep us awake? - Hanan Qasim

646 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/how-does-caffeine-keep-us-awake-hanan-qasim Over 100,000 metric tons of caffeine are consumed around the world every year. That’s equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focus
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How To Create Cleaner Coal - Emma Bryce

805 views / 0 likes - added 9 years ago

View full lesson here: http://ed.ted.com/lessons/how-to-create-cleaner-coal-emma-bryce It takes a lot of fuel to heat our homes, preserve our food, and power our gadgets. And for 40 percent of the world, cheap, plentiful coal gets the job done. But coal a
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Will the ocean ever run out of fish? - Ayana Elizabeth Johnson and Jennifer Jacquet

775 views / 1 likes - added 6 years ago

View full lesson: https://ed.ted.com/lessons/will-the-ocean-ever-run-out-of-fish-ayana-elizabeth-johnson-and-jennifer-jacquet When most people think of fishing, we imagine relaxing in a boat and patiently reeling in the day’s catch. But modern industrial
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The Physics Of Playing Guitar - Oscar Fernando Perez

1,166 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-physics-of-playing-guitar-oscar-fernando-perez Guitar masters like Jimi Hendrix are capable of bending the physics of waves to their wills, plucking melody from inspiration and vibration. But how do wood, me
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How To Draw A Kid In A Frankenstein Costume

76 views / 0 likes - added 7 months ago

Hey, art friends! Today, Teryn and I are drawing a kid in a Frankenstein costume, based on our previous duck costume lesson! It's a super fun way to show how you can change up a lesson to make it your own. Challenge time: Can your kids do this lesson agai
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Why Do Honeybees Love Hexagons? - Zack Patterson And Andy Peterson

853 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-do-honeybees-love-hexagons-zack-patterson-and-andy-peterson Honeybees are some of nature's finest mathematicians. Not only can they calculate angles and comprehend the roundness of the earth, these smart ins
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The Strengths And Weaknesses Of Acids And Bases - George Zaidan And Charles Morton

956 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-strengths-and-weaknesses-of-acids-and-bases-george-zaidan-and-charles-morton Vinegar may have a powerful smell, but did you know it's actually a weak acid? In the chemical economy, acids actively give away t
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What Happens When You Remove The Hippocampus? - Sam Kean

804 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/what-happens-when-you-remove-the-hippocampus-sam-kean When Henry Molaison (now widely known as H.M.) cracked his skull in an accident, he began blacking out and having seizures. In an attempt to cure him, darede
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Four Ways To Understand The Earth's Age - Joshua M. Sneideman

2,200 views / 2 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-earth-s-age-in-measurements-you-can-understand-joshua-m-sneideman The Earth is 4.6 billion years old -- but how can humans relate to a number so colossal, and where do we fit on the geologic timeline? Compar
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How Do Schools Of Fish Swim In Harmony? - Nathan S. Jacobs

903 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-do-schools-of-fish-swim-in-harmony-nathan-s-jacobs How do schools of fish swim in harmony? How do the tiny cells in your brain give rise to the complex thoughts, memories, and consciousness that are you? Odd
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Meet the tardigrade, the toughest animal on Earth - Thomas Boothby

1,030 views / 1 likes - added 7 years ago

View full lesson: http://ed.ted.com/lessons/meet-the-tardigrade-the-toughest-animal-on-earth-thomas-boothby Without water, a human can only survive for about 100 hours. But there’s a creature so resilient that it can go without it for decades. This
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