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  • 09:06 Minimum Wage and Price Floors

    Minimum Wage and Price Floors

    538 views / 0 likes - added

    How a minimum wage might effect the labor market More free lessons at: http://www.khanacademy.org/video?v=j0c2vmFGbtk

  • 09:36 2003 AIME II Problem 12

    2003 AIME II Problem 12

    480 views / 0 likes - added

    Minimum members in a committee More free lessons at: http://www.khanacademy.org/video?v=KD46pC_KFWk

  • 09:54 IIT JEE Hairy Trig and Algebra (Part 2)

    IIT JEE Hairy Trig and Algebra (Part 2)

    685 views / 0 likes - added

    2010 IIT JEE Paper 1 #38 Hairy Trig and Algebra (Part 2) More free lessons at: http://www.khanacademy.org/video?v=6t9ogglXNIM

  • 13:17 Collective Learning

    Collective Learning

    556 views / 0 likes - added

    How symbolic language drives collective learning and how this is one of the truly differentiating aspects of human beings relative to the rest of the animal kingdom More free lessons at: http://www.khanacademy.org/video?v=NqR_dtZu4Mo

  • 09:44 The Mole and Avogadro's Number

    The Mole and Avogadro's Number

    618 views / 0 likes - added

    Introduction to the idea of a mole as a number (vs. an animal) More free lessons at: http://www.khanacademy.org/video?v=AsqEkF7hcII

  • 06:47 Popular Squared Error of Regression Line

    Squared Error of Regression Line

    705 views / 0 likes - added

    Introduction to the idea that one can find a line that minimizes the squared distances to the points More free lessons at: http://www.khanacademy.org/video?v=6OvhLPS7rj4

  • 10:35 Proof (Part 1) Minimizing Squared Error to Regression Line

    Proof (Part 1) Minimizing Squared Error to Regression Line

    671 views / 0 likes - added

    Proof (Part 1) Minimizing Squared Error to Regression Line More free lessons at: http://www.khanacademy.org/video?v=mIx2Oj5y9Q8

  • 10:54 Popular Proof (Part 3) Minimizing Squared Error to Regression Line

    Proof (Part 3) Minimizing Squared Error to Regression Line

    713 views / 0 likes - added

    Proof (Part 3) Minimizing Squared Error to Regression Line More free lessons at: http://www.khanacademy.org/video?v=u1HhUB3NP8g

  • 04:18 Popular Proof (Part 4) Minimizing Squared Error to Regression Line

    Proof (Part 4) Minimizing Squared Error to Regression Line

    774 views / 0 likes - added

    Proof (Part 4) Minimizing Squared Error to Regression Line More free lessons at: http://www.khanacademy.org/video?v=8RSTQl0bQuw

  • 09:54 Popular Proof Part 2 Minimizing Squared Error to Line

    Proof Part 2 Minimizing Squared Error to Line

    738 views / 0 likes - added

    Proof Part 2 Minimizing Squared Error to Line More free lessons at: http://www.khanacademy.org/video?v=f6OnoxctvUk

  • 03:01 Loop De Loop Question

    Loop De Loop Question

    648 views / 0 likes - added

    Asks students to find the minimum speed necessary to complete the loop de loop More free lessons at: http://www.khanacademy.org/video?v=wjZb3zPuoeA

  • 06:05 Loop De Loop Answer part 1

    Loop De Loop Answer part 1

    566 views / 0 likes - added

    Figuring out the minimum speed at the top of the loop de loop to stay on the track More free lessons at: http://www.khanacademy.org/video?v=4SQDybFjhRE

  • 12:12 Popular Introduction to Astronomy: Crash Course Astronomy #1

    Introduction to Astronomy: Crash Course Astronomy #1

    714 views / 3 likes - added

    Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with answering a question: "What is astronomy?" -- Table of Contents: What is Astronomy? 3:00 Who Studie

  • 11:17 Naked Eye Observations: Crash Course Astronomy #2

    Naked Eye Observations: Crash Course Astronomy #2

    664 views / 0 likes - added

    Today on Crash Course Astronomy, Phil invites you to head outside and take a look at all the incredible things you can see with your naked eye. -- Table of Contents: Naked Eye Observations 0:28.4 Constellations 3:09.7 The Color of Stars 2:44.5 View of the

  • 09:51 Popular The Moon: Astronomy #12

    The Moon: Astronomy #12

    953 views / 1 likes - added

    Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation. This episode is brought to you by Squarespace: http://www.squarespace.com/crashcourse -- Table of Contents Many Millio

  • 12:31 Popular The Railroad Journey and the Industrial Revolution: Crash Course World History 214

    The Railroad Journey and the Industrial Revolution: Crash Course World History 214

    737 views / 2 likes - added

    In which John Green teaches you about railroads, and some of the ways they changed the world, and how they were a sort of microcosm for the Industrial Revolution as a whole. Prior to the invention of steam powered railroads, pretty much all locomotion had

  • 09:35 Popular The Bobo Beatdown - Crash Course Psychology #12

    The Bobo Beatdown - Crash Course Psychology #12

    838 views / 0 likes - added

    You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

  • 09:46 Popular Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry #22

    Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry #22

    943 views / 0 likes - added

    Atoms are a lot like us - we call their relationships "bonds," and there are many different types. Each kind of atomic relationship requires a different type of energy, but they all do best when they settle into the lowest stress situation possible. The n

  • 12:24 Popular Ghosts, Murder, and More Murder - Hamlet Part I: Crash Course Literature 203

    Ghosts, Murder, and More Murder - Hamlet Part I: Crash Course Literature 203

    849 views / 1 likes - added

    You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

  • 12:57 Popular Don't Reanimate Corpses! Frankenstein Part 1: Crash Course Literature 205

    Don't Reanimate Corpses! Frankenstein Part 1: Crash Course Literature 205

    1,018 views / 2 likes - added

    In which John Green teaches you about Mary Shelley's novel, Frankenstein. Sure, you know Frankenstein the cultural phenomenon, but how much do you know about the novel that started it all? You'll learn about the Romantic movement in English lit, of which

  • 11:35 Popular Eukaryopolis - The City of Animal Cells: Crash Course Biology #4

    Eukaryopolis - The City of Animal Cells: Crash Course Biology #4

    1,089 views / 0 likes - added

    Hank tells us about the city of Eukaryopolis - the animal cell that is responsible for all the cool things that happen in our bodies. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Se

  • 10:28 Popular Plant Cells: Crash Course Biology #6

    Plant Cells: Crash Course Biology #6

    1,482 views / 1 likes - added

    Hank describes why plants are so freaking amazing - discussing their evolution, and how their cells are both similar to&different from animal cells. Crash Course Biology now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-S

  • 14:08 Popular DNA, Hot Pockets,&The Longest Word Ever: Crash Course Biology #11

    DNA, Hot Pockets,&The Longest Word Ever: Crash Course Biology #11

    1,116 views / 0 likes - added

    Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build proteins. Crash Course B

  • 11:32 Popular Animal Development: We're Just Tubes - Crash Course Biology #16

    Animal Development: We're Just Tubes - Crash Course Biology #16

    860 views / 0 likes - added

    Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like CrashCourse on Facebook: http://www.facebook.com/youtubecrashcourse

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  • 10:57 Popular Evolutionary Development: Chicken Teeth - Crash Course Biology #17

    Evolutionary Development: Chicken Teeth - Crash Course Biology #17

    1,059 views / 0 likes - added

    Hank introduces us to the relatively new field of evolutionary developmental biology, which compares the developmental processes of different organisms to determine their ancestral relationship, and to discover how those processes evolved. Also fruit flie

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  • 12:16 Popular Taxonomy: Life's Filing System - Crash Course Biology #19

    Taxonomy: Life's Filing System - Crash Course Biology #19

    1,227 views / 0 likes - added

    Hank tells us the background story and explains the importance of the science of classifying living things, also known as taxonomy. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like CrashCourse on Facebook: http://www.facebook.com/You

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  • 08:51 Popular Comparative Anatomy: What Makes Us Animals - Crash Course Biology #21

    Comparative Anatomy: What Makes Us Animals - Crash Course Biology #21

    1,747 views / 0 likes - added

    Hank introduces us to comparative anatomy, which studies the similarities and differences in animal anatomy to support the theory of evolution and the shared ancestry of living things. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like

  • 11:31 Popular Simple Animals: Sponges, Jellies,&Octopuses - Crash Course Biology #22

    Simple Animals: Sponges, Jellies,&Octopuses - Crash Course Biology #22

    831 views / 0 likes - added

    Hank introduces us to the "simplest" of the animals, complexity-wise: beginning with sponges (whose very inclusion in the list as "animals" has been called into question because they are so simple) and finishing with the most complex molluscs, octopuses a

  • 13:15 Complex Animals: Annelids&Arthropods - CrashCourse Biology #23

    Complex Animals: Annelids&Arthropods - CrashCourse Biology #23

    675 views / 0 likes - added

    Hank continues our exploration of animal phyla with the more complexly organized annelida and arthropoda, and a biolography on insects. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like CrashCourse on Facebook: http://www.facebook.com

  • 12:10 Popular Chordates - CrashCourse Biology #24

    Chordates - CrashCourse Biology #24

    1,616 views / 0 likes - added

    Hank introduces us to ourselves by taking us on a journey through the fascinatingly diverse phyla known as chordata. And the next time someone asks you who you are, you can give them the facts: you're a mammalian amniotic tetrapodal sarcopterygian osteich

  • 10:54 Popular Animal Behavior - CrashCourse Biology #25

    Animal Behavior - CrashCourse Biology #25

    1,129 views / 0 likes - added

    Hank and his cat Cameo help teach us about animal behavior and how we can discover why animals do the things they do. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like Crash Course on Facebook: http://www.facebook.com/youtubecrashcour

  • 11:40 Popular Circulatory&Respiratory Systems - CrashCourse Biology #27

    Circulatory&Respiratory Systems - CrashCourse Biology #27

    2,196 views / 0 likes - added

    Hank takes us on a trip around the body - we follow the circulatory and respiratory systems as they deliver oxygen and remove carbon dioxide from cells, and help make it possible for our bodies to function. Crash Course Biology is now available on DVD! ht

  • 11:53 Popular The Digestive System: CrashCourse Biology #28

    The Digestive System: CrashCourse Biology #28

    1,057 views / 6 likes - added

    Hank takes us through the bowels of the human digestive system and explains why it's all about surface area. Crash Course Biology is now available on DVD! http://dft.ba/-8bCC Like Crash Course? http://www.facebook.com/youtubecrashcourse Follow Crash Cours

  • 13:11 Popular The Skeletal System: It's ALIVE! - CrashCourse Biology #30

    The Skeletal System: It's ALIVE! - CrashCourse Biology #30

    1,286 views / 1 likes - added

    Hank introduces us to the framework of our bodies, our skeleton, which apart from being the support and protection for all our fleshy parts, is involved in many other vital processes that help our bodies to function properly. Crash Course Biology is now a

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  • 15:02 Popular Your Immune System: Natural Born Killer - Crash Course Biology #32

    Your Immune System: Natural Born Killer - Crash Course Biology #32

    902 views / 0 likes - added

    Hank tells us about the team of deadly ninja assassins that is tasked with protecting our bodies from all the bad guys that want to kill us - also known as our immune system. Crash Course Biology is now available on DVD! http://dft.ba/-8bCC Like CrashCour

  • 11:54 Popular Vascular Plants = Winning! - Crash Course Biology #37

    Vascular Plants = Winning! - Crash Course Biology #37

    1,082 views / 0 likes - added

    Hank introduces us to one of the most diverse and important families in the tree of life - the vascular plants. These plants have found tremendous success and the their secret is also their defining trait: conductive tissues that can take food and water f

  • 10:26 Popular Ecology - Rules for Living on Earth: Crash Course Biology #40

    Ecology - Rules for Living on Earth: Crash Course Biology #40

    2,192 views / 0 likes - added

    Hank introduces us to ecology - the study of the rules of engagement for all of us earthlings - which seeks to explain why the world looks and acts the way it does. The world is crammed with things, both animate and not, that have been interacting with ea

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  • 12:06 Popular Mesopotamia: Crash Course World History #3

    Mesopotamia: Crash Course World History #3

    813 views / 0 likes - added

    In which John presents Mesopotamia, and the early civilizations that arose around the Fertile Crescent. Topics covered include the birth of territorial kingdoms, empires, Neo-Assyrian torture tactics, sacred marriages, ancient labor practices, the world's

  • 12:09 Popular The Columbian Exchange: Crash Course World History #23

    The Columbian Exchange: Crash Course World History #23

    1,026 views / 0 likes - added

    In which John Green teaches you about the changes wrought by contact between the Old World and the New. John does this by exploring the totally awesome history book "The Columbian Exchange" by Alfred Cosby, Jr. After Columbus "discovered" the Americas, Eu

  • 02:15 Sesame Street: Jonah Hill Learns the Word, Empty

    Sesame Street: Jonah Hill Learns the Word, Empty

    664 views / 0 likes - added

    There are no pretzels left in the pretzel bowl. There is no water left in the glass, and there are no wild animals in the cage. The bowl, the glass, and the cage are all empty. Fortunately, Jonah Hill and Murray have a box full of crayons to keep the wild

  • 02:24 Sesame Street: Strenuous with Wendi and Elmo

    Sesame Street: Strenuous with Wendi and Elmo

    609 views / 1 likes - added

    Wendi McLendon-Covey and Elmo are tough. They ran around, lifted a heavy rock, and played tug-of-war with one of the world's strongest animals. What makes something strenuous? Wendi and Elmo can tell you - activities that require a ton of energy and hard

  • 00:38 Popular Sesame Street: "Alphabet Songs" Preview

    Sesame Street: "Alphabet Songs" Preview

    772 views / 0 likes - added

    Sing your ABCs with Elmo and all your favorite Sesame Street Muppets! Full of furry friends, animation, and children, this feature includes songs for every letter of the alphabet! Special guests Norah Jones, the Dixie Chicks, and Smokey Robinson. Subscrib

  • 00:45 Popular Sesame Street: "Elmo's World: All About Animals" Preview

    Sesame Street: "Elmo's World: All About Animals" Preview

    1,009 views / 1 likes - added

    Elmo loves animals. Join Sesame Street's red monster and his special friend Dorothy as they explore wild animals, pets, and more! Over 2 hours of Elmo's World! Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_use

  • 05:14 Popular Sesame Street: Lord of the Crumbs (Lord of the Rings Parody)

    Sesame Street: Lord of the Crumbs (Lord of the Rings Parody)

    708 views / 1 likes - added

    Legend speaks of a dessert unimaginably sweet and delicious. When it was destroyed all that remained was the dessert's powerful recipe which remained in the hands of a monster named Gobble for a long time. When the recipe disappeared, all of the cookies o

  • 01:04 Popular Sesame Street: "Fairy Tale Fun!" Preview

    Sesame Street: "Fairy Tale Fun!" Preview

    715 views / 0 likes - added

    Fairy tales and nursery rhymes come to life on Sesame Street! Mother Goose has rhymer's block—can Elmo come to the rescue to undo this snafu? Is Oscar really the Prince of Nice in disguise? How will Hansel and Gretel replace their too-tempting-to-last coo

  • 02:23 Sesame Street: New Season Trailer!

    Sesame Street: New Season Trailer!

    583 views / 0 likes - added

    Sesame Street is back for its newest season. Subscribe for new clips and content from the show every day: Monday- Songs Tuesday- Celebs Wednesday- Parodies&Shorts Thursdays- Playlists, throwbacks&surprises! Friday- Films&Animations Subscribe to the Sesame

  • 01:01 Popular Sesame Street: Sand Animals Sing a Song

    Sesame Street: Sand Animals Sing a Song

    1,267 views / 0 likes - added

    Sand animals sing, sing a song Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet For more fun games and videos for your preschooler in a safe, child-friendly environment, visit us at http://www.s

  • 01:27 Popular Sesame Street: Tropical Five

    Sesame Street: Tropical Five

    780 views / 0 likes - added

    Count to five with tropical animals and fruits! Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet For more fun games and videos for your preschooler in a safe, child-friendly environment, visit u

  • 05:29 Sesame Street Explores National Parks: Grand Canyon National Park -- Families

    Sesame Street Explores National Parks: Grand Canyon National Park -- Families

    571 views / 0 likes - added

    Learn about animal families with Ranger Amala. Sesame Street Explores National Parks is produced in partnership with the National Park Service and the National Park Foundation. Special thanks to Grand Canyon National Park and Gateway National Recreation A

  • 01:18 Popular Sesame Street: "Look and Find Elmo on Sesame Street" App Preview

    Sesame Street: "Look and Find Elmo on Sesame Street" App Preview

    1,185 views / 0 likes - added

    "Look and Find® Elmo on Sesame Street is a new educational app from the creators of Potty Time with Elmo. In this app, everyone's favorite furry red monster needs help finding things that go HONK! and BOING! and CLANK! With Elmo as their guide, preschoole

  • 56:43 Popular Wild Thing: The Smithsonian National Zoo

    Wild Thing: The Smithsonian National Zoo

    948 views / 2 likes - added

    As part of its mission to "advance research and scientific knowledge in conserving wildlife and to teach and inspire people to protect wildlife, natural resources, and habitats," scientists at the National Zoo breed endangered species for the purpose of r

  • 01:25 The National Racing Museum (webisode)

    The National Racing Museum (webisode)

    562 views / 0 likes - added

    Great Museums TV presents a preview clip of The National Museum of Racing and Thoroughbred Hall of Fame, located in Saratoga Springs, NY. This episode aired on public television stations across the nation. Click on http://greatmuseums.org for more informa

  • 03:39 Popular Disney's Frozen "Let It Go" Sequence Performed by Idina Menzel

    Disney's Frozen "Let It Go" Sequence Performed by Idina Menzel

    6,698 views / 62 likes - added

    Frozen is now available to own on Blu-ray & Digital HD.In this clip from Disney's "Frozen," Elsa, whose secret powers have just been revealed, flees Arendelle and unleashes her magic, creating a breathtaking ice palace. Performed by the voice of Elsa,

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  • 02:08 Popular "Snowman" Clip - The Story of Frozen: Making a Disney Animated Classic

    "Snowman" Clip - The Story of Frozen: Making a Disney Animated Classic

    1,842 views / 3 likes - added

    Did you know "Do You Want to Build a Snowman?" almost did not make the final cut? Learn more this Tuesday at 8pm on ABC in The Story of Frozen: Making a Disney Animated Classic.Viewers will get a rare look inside Walt Disney Animation Studios and unpreced

  • 02:21 Popular How Dinosaurs Went Extinct!

    How Dinosaurs Went Extinct!

    1,140 views / 1 likes - added

    Meteors came hurtling to Earth and stopped life as they knew it for the dinosaurs. Complete and instantaneous extinction is no longer the theory. What did the extinction look like? See how a T-Rex survives impact as some animals did, only to succumb to th

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  • 02:17 Popular How Dinosaurs Are Born

    How Dinosaurs Are Born

    842 views / 0 likes - added

    Ever wonder how animals as big as dinosaurs are born? Watch the miracle of life from the dinosaur perspective. Watch the whole playlist of dinosaur videos here: http://www.youtube.com/watch?v=sW4p6vzviKQ&list=PLfpPYJH6OjtZGZH1hlR40wD4rnq14p41x&index=1 Sub

  • 02:30 Popular SUPER-CUTE VIDEO OF DINOSAUR BABIES!!!

    SUPER-CUTE VIDEO OF DINOSAUR BABIES!!!

    875 views / 2 likes - added

    Baby animals are cute, even T-Rex babies. See a baby Brontosaurus in the egg before it hatches and a baby Tyrannosaurus in its parents mouth. There are more dinosaur babies interacting with their mothers, the world around them, and just plain having fun.

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  • 11:39 The Ingenious Design of the Aluminum Beverage Can

    The Ingenious Design of the Aluminum Beverage Can

    604 views / 0 likes - added

    Bill details the engineering choices underlying the design of a beverage can He explains why it is cylindrical, outlines the manufacturing steps needed to created the can, notes why the can narrows near it lid, show close ups of the double-seam that hold

  • 01:57 Sesame Street: Zach Galifianakis is Nimble

    Sesame Street: Zach Galifianakis is Nimble

    523 views / 0 likes - added

    Today Murray recites the nursery rhyme,“Zach Be Nimble.” Do you know what nimble means? To be nimble is to be quick and light. Watch Zach Galifianakis demonstrate nimble as he jumps quickly and lightly over a candlestick. Subscribe to the Sesame Street Ch

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  • 07:24 Superbugs: The Empire Strikes Bacteria

    Superbugs: The Empire Strikes Bacteria

    681 views / 0 likes - added

    Check out GROSS SCIENCE: http://bit.ly/1DH5zbv Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart↓ More info and sources below ↓ Are we entering the post-antibiotic era? Antibiotic-resistant bacteria are on the rise, with millions of infections re

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  • 07:05 The Recipe For Life…

    The Recipe For Life…

    601 views / 0 likes - added

    We're cookin' in the primordial kitchen! Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart↓ More info and sources below ↓ If the human body could be distilled down into one molecule, what would our chemical formula be? And WHY is it that way? Is

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  • 05:06 Popular %$?# Allergies!

    %$?# Allergies!

    894 views / 0 likes - added

    It’s the season for sneezin’! Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Springtime means the arrival of green grass, bright flowers, and buzzing bees. But for many of us, it’s also about sneezing, watery re

  • 04:01 Popular How Many Stars Are There?

    How Many Stars Are There?

    1,006 views / 2 likes - added

    Counting stars from the shore of the cosmic ocean… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ LIKE THE SHIRT I'M WEARING? It's glow in the dark! You can get it here (along with space undies and other good st

  • 03:12 Popular What Color Is The Universe?

    What Color Is The Universe?

    1,593 views / 2 likes - added

    Hint: It’s not black Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ When you stare up at the night sky, you might think that the universe is really black, but that’s just because our eyes aren’t sensitive enough

  • 06:35 Popular Attack Of The Zombie Parasites!

    Attack Of The Zombie Parasites!

    822 views / 3 likes - added

    Did someone say BRAAAAAINS…? Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Shows like The Walking Dead are full of hungry, mindless, surprisingly fleet-footed armies of brain-eating zombies. Could they actually

  • 04:47 Popular Why Does February Only Have 28 Days?

    Why Does February Only Have 28 Days?

    943 views / 4 likes - added

    It's not the size of the month that matters… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Why does February only get 28 days when all the other months get 30 or 31? The answer is part superstition, part politi

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  • 04:46 Popular How Many Heartbeats Do We Get?

    How Many Heartbeats Do We Get?

    1,390 views / 0 likes - added

    Science really gets my heart going… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart

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  • 06:34 Popular Does My Dog Know What I'm Thinking?

    Does My Dog Know What I'm Thinking?

    856 views / 0 likes - added

    Head to BrainCraft for more doggy science! http://youtu.be/OBy3idLwwYM Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesm

  • 05:45 Popular What's The Deadliest Animal In The World?

    What's The Deadliest Animal In The World?

    836 views / 2 likes - added

    Besides humans, of course. Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Gates Foundation info on the world’s

  • 02:34 Popular The Little Prince Official Trailer #1 (2015) - Marion Cotillard, Jeff Bridges Animated Movie HD

    The Little Prince Official Trailer #1 (2015) - Marion Cotillard, Jeff Bridges Animated Movie HD

    1,403 views / 1 likes - added

    Subscribe to TRAILERS: http://bit.ly/sxaw6hSubscribe to COMING SOON: http://bit.ly/H2vZUnSubscribe to INDIE TRAILERS: http://goo.gl/iPUuoLike us on FACEBOOK:http://goo.gl/dHs73Follow us on TWITTER: http://bit.ly/1ghOWmtThe Little Prince Official Trailer #

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  • 01:59 Popular Monkeying Around - Ultimate Animal Movie Mashup (2015) HD

    Monkeying Around - Ultimate Animal Movie Mashup (2015) HD

    876 views / 3 likes - added

    Subscribe to TRAILERS: http://bit.ly/sxaw6h Subscribe to COMING SOON: http://bit.ly/H2vZUn Like us on FACEBOOK: http://goo.gl/dHs73 Follow us on TWITTER: http://bit.ly/1ghOWmt Monkeying Around - Ultimate Animal Movie Mashup (2015) HD Celebrate nature with

  • 04:14 Popular You Are An Upside-Down Lobster

    You Are An Upside-Down Lobster

    760 views / 1 likes - added

    Vote PBS Digital Studios for 'Best Science&Education Network' in the 2015 Webbys -- http://vid.io/xqjk ---- Here's why you aren't built like a lobster. Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub↓ More info and sources below ↓ Follow on Tw

  • 01:14 Popular Born In China Official Trailer #1 (2016) - Disneynature Movie HD

    Born In China Official Trailer #1 (2016) - Disneynature Movie HD

    973 views / 1 likes - added

    Subscribe to TRAILERS: http://bit.ly/sxaw6h Subscribe to COMING SOON: http://bit.ly/H2vZUn Like us on FACEBOOK: http://goo.gl/dHs73 Follow us on TWITTER: http://bit.ly/1ghOWmt Born in China Official Trailer #1 (2016) - Disneynature Movie HD Disneynature,

  • 12:23 Popular Would Headlights Work At Light Speed?

    Would Headlights Work At Light Speed?

    716 views / 0 likes - added

    If you were driving at the speed of light and turned on your headlights, what would happen? Twitter: http://www.twitter.com/tweetsauce Instagram: http://www.instagram.com/electricpants Sources and extras below!! Thanks to Jude for asking me this question

  • 08:23 Popular Is Ultron Inevitable?

    Is Ultron Inevitable?

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    Follow me to Vsauce3!! http://bit.ly/1zUxn7a Twitter: @okaytobesmart @jtotheizzoe Instagram: @jtotheizzoe↓ More info and sources below ↓ Will artificial intelligence ever surpass human intelligence? And if that happens, will AI be good or bad? Is evil AI

  • 11:14 Popular How To Draw A Narwhal

    How To Draw A Narwhal

    1,146 views / 3 likes - added

    It's an underwater unicorn! Today we're learning how to draw a narwhal. These animals really seem like they're from some fantasy world. EMAIL A PHOTO OF YOUR ART: myart@artforkidshub.com MAIL US YOUR ART: Art for Kids Hub P.O. Box 927 Pleasant Grove, UT 8

  • 13:32 What Is The Speed Of Dark?

    What Is The Speed Of Dark?

    656 views / 1 likes - added

    twitter: http://www.twitter.com/tweetsauce instagram: http://www.instagram.com/electricpants facebook: http://www.facebook.com/VsauceGaming SOURCES BELOW: this is the video where I talk about THE SPEED OF PUSH: https://www.youtube.com/watch?v=Do1lm9IevYE

  • 03:59 Popular Solution To The Impossible Bet

    Solution To The Impossible Bet

    838 views / 1 likes - added

    This problem is called the "100 Prisoners Problem", more info on the math here: http://en.m.wikipedia.org/wiki/100_prisoners_problem Thanks to http://www.ifixit.com for supporting us on Subbable! and to Subbable supporter @vicnice137 And thanks to my frie

  • 02:41 Relativity Isn't Relative

    Relativity Isn't Relative

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    SPACE-SHEEP! http://labs.minutelabs.io/Relativistic-Space-Sheep/ and subscribe to MinuteLabs at http://www.subbable.com/minutelabsio Video about the Space-Sheep: https://www.youtube.com/watch?v=NVpv_rJeQcQ MinutePhysics is on Google+ - http://bit.ly/qzEwc

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  • 00:18 Radar Explained In Ten Seconds

    Radar Explained In Ten Seconds

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    EXTRA BONUS FACT: Typical radar can only send out radio waves in one direction at a time, which is why a doppler radar "sweeps" around in order to see in all directions. MinutePhysics is on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com

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  • 03:26 What Is Sea Level?

    What Is Sea Level?

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    FREE FACT: An oblate spheroid is a special case of an ellipsoid where two of the semi-principal axes are the same size. A special thanks to our Subbable.com supporters: Robby Weisenfeld Gustav Delius Ike https://www.youtube.com/TheNilFacts And to Audible.

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  • 00:18 Rainbows Explained In Ten Seconds

    Rainbows Explained In Ten Seconds

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    MinutePhysics is on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com/minutephysics And twitter - @minutephysics Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Music by Nat

  • 02:09 Magnetic Levitation

    Magnetic Levitation

    529 views / 1 likes - added

    The people who levitated the frog: http://www.ru.nl/hfml/research/levitation/ And of course, MinutePhysics on Subbable: http://www.subbable.com/minutephysics MinutePhysics is on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com/minutephysi

  • 06:21 Popular An Electric Eel And A Caiman

    An Electric Eel And A Caiman

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    Wherein Isobel and Maria show us the ropes -- or nets -- for surveying fishes in the Amazon. The distribution of fish in tropical river systems is important to understanding how animals move around these waterways. Where there are big fish -- like the ele

  • 03:36 Popular OK Go - White Knuckles - Official Video

    OK Go - White Knuckles - Official Video

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    Official music video for OK Go's 'White Knuckles'. Directed by Trish Sie and OK Go. Produced by Shirley Moyers. Special thanks to: Lauren Henry and Roland Sonnenburg and their team of trainers from Talented Animals, the town of Corvallis OR for being so w

  • 02:41 Popular OK Go - Last Leaf - Official Video

    OK Go - Last Leaf - Official Video

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    Official Music Video for OK Go's "Last Leaf" This video was made in partnership with Samsung NX100 iFn. Directed by OK Go, Nadeem Mazen and Ali Mohammad Produced by Shirley Moyers Animation art by Geoff Mcfetridge, Champion Studio Preliminary Animation by

  • 06:12 Popular Could We Clone Ourselves?

    Could We Clone Ourselves?

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    Just be yourself! Or be your other self. Whichever. Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Is the science of Orphan Black realistic? Could we clone humans, or engineer them to have customized traits? We

  • 12:56 Popular Monkeys And Coconuts - Numberphile

    Monkeys And Coconuts - Numberphile

    726 views / 0 likes - added

    An old problem which baffled many people. Featuring Dr Tony Padilla. Editing and animation in this film by Pete McPartlan - https://twitter.com/petemcpartlan NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com

  • 05:48 Popular Winning At Rock Paper Scissors - Numberphile

    Winning At Rock Paper Scissors - Numberphile

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    Squarespace: http://www.squarespace.com/numberphile This video features Hannah Fry - https://twitter.com/fryrsquared More on this topic (and lizards): http://youtu.be/Z8lv2vy5vco And even more on this topic: http://youtu.be/ygHwBxWyI6E The paper: http://b

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  • 01:14 Popular Disneynature's Born In China Official US Trailer

    Disneynature's Born In China Official US Trailer

    885 views / 3 likes - added

    Disneynature, in its ongoing quest to bring the natural world to the big screen as never before, presents its most ambitious project to date, taking moviegoers on a grand journey into the wilds of China. “Born In China” follows the adventures of three ani

  • 04:37 Sunlight Is Way Older Than You Think - Sten Odenwald

    Sunlight Is Way Older Than You Think - Sten Odenwald

    464 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/sunlight-is-way-older-than-you-think-sten-odenwald It takes light a zippy 8 minutes to reach Earth from the surface of the Sun. But how long does it take that same light to travel from the Sun’s core to its surf

  • 06:01 The Wars That Inspired Game Of Thrones - Alex Gendler

    The Wars That Inspired Game Of Thrones - Alex Gendler

    633 views / 0 likes - added

    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

  • 04:22 Popular Why Do Your Knuckles Pop? - Eleanor Nelsen

    Why Do Your Knuckles Pop? - Eleanor Nelsen

    808 views / 3 likes - added

    View full lesson: http://ed.ted.com/lessons/why-do-your-knuckles-pop-eleanor-nelsen Some people love the feeling of cracking their knuckles, while others cringe at the sound. But what causes that trademark pop? And is it dangerous? Eleanor Nelsen gives th

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  • 04:17 Popular What Causes Economic Bubbles? - Prateek Singh

    What Causes Economic Bubbles? - Prateek Singh

    1,032 views / 0 likes - added

    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,

  • 04:33 Popular What Is Leukemia? - Danilo Allegra And Dania Puggioni

    What Is Leukemia? - Danilo Allegra And Dania Puggioni

    925 views / 0 likes - added

    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

  • 04:41 Why Neutrinos Matter - Sílvia Bravo Gallart

    Why Neutrinos Matter - Sílvia Bravo Gallart

    623 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/why-neutrinos-matter-silvia-bravo-gallart Elementary particles are the smallest known building blocks in the universe—and the neutrino is one of the smallest of the small. These tiny neutrinos can tell us about

  • 04:00 Popular Could Your Brain Repair Itself? - Ralitsa Petrova

    Could Your Brain Repair Itself? - Ralitsa Petrova

    856 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/could-your-brain-repair-itself-ralitsa-petrova Imagine the brain could reboot, updating its damaged cells with new, improved units. That may sound like science fiction — but it’s a potential reality scientists a

  • 04:10 Popular How To Unboil An Egg - Eleanor Nelsen

    How To Unboil An Egg - Eleanor Nelsen

    767 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/how-to-unboil-an-egg-eleanor-nelsen It’s so obvious that it’s practically proverbial: you can’t unboil an egg. But actually, it turns out that you can -- sort of. Eleanor Nelsen explains the process by which mec

  • 04:19 Popular Why Is Biodiversity So Important? - Kim Preshoff

    Why Is Biodiversity So Important? - Kim Preshoff

    1,441 views / 2 likes - added

    View full lesson: http://ed.ted.com/lessons/why-is-biodiversity-so-important-kim-preshoff Our planet’s diverse, thriving ecosystems may seem like permanent fixtures, but they’re actually vulnerable to collapse. Jungles can become deserts, and reefs can be

  • 04:12 Popular How Brass Instruments Work - Al Cannon

    How Brass Instruments Work - Al Cannon

    882 views / 1 likes - added

    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

  • 04:07 Popular What Really Happens To The Plastic You Throw Away - Emma Bryce

    What Really Happens To The Plastic You Throw Away - Emma Bryce

    1,366 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/what-really-happens-to-the-plastic-you-throw-away-emma-bryce We’ve all been told that we should recycle plastic bottles and containers. But what actually happens to the plastic if we just throw it away? Emma Bry

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  • 04:03 Popular The Effects Of Underwater Pressure On The Body - Neosha S Kashef

    The Effects Of Underwater Pressure On The Body - Neosha S Kashef

    778 views / 0 likes - added

    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

  • 04:57 Popular Eye Vs. Camera - Michael Mauser

    Eye Vs. Camera - Michael Mauser

    1,085 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/eye-vs-camera-michael-mauser Your eyes don’t always capture the world exactly as a video camera would. But the eyes are remarkably efficient organs, the result of hundreds of millions of years of coevolution wit

  • 04:30 Popular How Do Geckos Defy Gravity? - Eleanor Nelsen

    How Do Geckos Defy Gravity? - Eleanor Nelsen

    789 views / 2 likes - added

    View full lesson: http://ed.ted.com/lessons/how-do-geckos-defy-gravity-eleanor-nelsen Geckos aren’t covered in adhesives or hooks or suction cups, and yet they can effortlessly scale vertical walls and hang from ceilings. What’s going on? Eleanor Nelsen e

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  • 03:39 Popular The Science Of Static Electricity - Anuradha Bhagwat

    The Science Of Static Electricity - Anuradha Bhagwat

    1,223 views / 3 likes - added

    View full lesson: http://ed.ted.com/lessons/the-science-of-static-electricity-anuradha-bhagwat We’ve all had the experience: you’re walking across a soft carpet, you reach for the doorknob and … ZAP. But what causes this trademark jolt of static electrici

  • 04:42 Popular The Real Story Behind Archimedes’ Eureka! - Armand D'Angour

    The Real Story Behind Archimedes’ Eureka! - Armand D'Angour

    1,664 views / 1 likes - added

    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

  • 04:31 Popular Why It’s So Hard To Cure HIV/AIDS - Janet Iwasa

    Why It’s So Hard To Cure HIV/AIDS - Janet Iwasa

    1,028 views / 2 likes - added

    View full lesson: http://ed.ted.com/lessons/why-it-s-so-hard-to-cure-hiv-aids-janet-iwasa In 2008, something incredible happened: a man was cured of HIV. In over 70 million HIV cases, this was a first, and, so far, a last, and we don’t yet understand exac

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  • 04:33 Popular Plato’s Allegory Of The Cave - Alex Gendler

    Plato’s Allegory Of The Cave - Alex Gendler

    1,016 views / 0 likes - added

    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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  • 05:14 Popular How Brain Parasites Change Their Host's Behavior - Jaap De Roode

    How Brain Parasites Change Their Host's Behavior - Jaap De Roode

    780 views / 1 likes - added

    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

  • 05:46 Popular Learning From Smallpox: How To Eradicate A Disease - Julie Garon And Walter A. Orenstein

    Learning From Smallpox: How To Eradicate A Disease - Julie Garon And Walter A. Orenstein

    760 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/learning-from-smallpox-how-to-eradicate-a-disease-julie-garon-and-walter-a-orenstein For most of human history, we have sought to treat and cure diseases. But only in recent decades did it become possible to ens

  • 03:30 Popular Rhythm In A Box: The Story Of The Cajon Drum - Paul Jennings

    Rhythm In A Box: The Story Of The Cajon Drum - Paul Jennings

    837 views / 1 likes - added

    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

  • 04:07 Popular Did Shakespeare Write His Plays? - Natalya St. Clair And Aaron Williams

    Did Shakespeare Write His Plays? - Natalya St. Clair And Aaron Williams

    1,072 views / 1 likes - added

    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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  • 04:10 Popular The Last Banana: A Thought Experiment In Probability - Leonardo Barichello

    The Last Banana: A Thought Experiment In Probability - Leonardo Barichello

    2,000 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/the-last-banana-a-thought-experiment-in-probability-leonardo-barichello Imagine a game played with two players and two dice: if the biggest number rolled is one, two, three, or four, player 1 wins. If the bigges

  • 03:21 Popular What Does The Pancreas Do? - Emma Bryce

    What Does The Pancreas Do? - Emma Bryce

    1,668 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/what-does-the-pancreas-do-emma-bryce Beneath your ribs, you’ll find, among other things, the pancreas -- an organ that works a lot like a personal health coach. Emma Bryce explains how this organ controls your s

  • 05:40 Popular History Vs. Richard Nixon - Alex Gendler

    History Vs. Richard Nixon - Alex Gendler

    1,033 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/history-vs-richard-nixon-alex-gendler The president of the United States of America is often said to be one of the most powerful positions in the world. But of all the US presidents accused of abusing that power

  • 04:37 Popular The Law Of Conservation Of Mass - Todd Ramsey

    The Law Of Conservation Of Mass - Todd Ramsey

    2,356 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/the-law-of-conservation-of-mass-todd-ramsey Everything in our universe has mass — from the smallest atom to the largest star. But the amount of mass has remained constant throughout existence even during the bir

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  • 05:42 Popular How We Think Complex Cells Evolved - Adam Jacobson

    How We Think Complex Cells Evolved - Adam Jacobson

    840 views / 0 likes - added

    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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  • 05:44 Popular The Sonic Boom Problem - Katerina Kaouri

    The Sonic Boom Problem - Katerina Kaouri

    1,005 views / 0 likes - added

    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

  • 03:55 Popular How Do Your Kidneys Work? - Emma Bryce

    How Do Your Kidneys Work? - Emma Bryce

    1,213 views / 1 likes - added

    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

  • 05:44 Popular The History Of Museums - J. V. Maranto

    The History Of Museums - J. V. Maranto

    742 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/why-do-we-have-museums-j-v-maranto Museums have been a part of human history for over 2,000 years -- but they weren't always like the ones we visit today. J.V. Maranto uncovers the evolution of museums, from the

  • 15:47 Popular How Poachers Became Caretakers - John Kasaona

    How Poachers Became Caretakers - John Kasaona

    929 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/how-poachers-became-caretakers-john-kasaona In his home of Namibia, John Kasaona is working on an innovative way to protect endangered animal species: giving nearby villagers (including former poachers) responsi

  • 05:03 Popular How Does Your Smartphone Know Your Location? - Wilton L. Virgo

    How Does Your Smartphone Know Your Location? - Wilton L. Virgo

    845 views / 0 likes - added

    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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  • 05:22 Popular Why Shakespeare Loved Iambic Pentameter - David T. Freeman And Gregory Taylor

    Why Shakespeare Loved Iambic Pentameter - David T. Freeman And Gregory Taylor

    918 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/why-shakespeare-loved-iambic-pentameter-david-t-freeman-and-gregory-taylor Shakespeare sometimes gets a bad rap in high schools for his complex plots and antiquated language. But a quick peek into the rhythm of

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  • 04:52 Popular Why Do Buildings Fall In Earthquakes? - Vicki V. May

    Why Do Buildings Fall In Earthquakes? - Vicki V. May

    1,452 views / 5 likes - added

    View full lesson: http://ed.ted.com/lessons/why-do-buildings-fall-in-earthquakes-vicki-v-may Earthquakes have always been a terrifying phenomenon, and they’ve become more deadly as our cities have grown — with collapsing buildings posing one of the larges

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  • 03:46 Popular What Triggers A Chemical Reaction? - Kareem Jarrah

    What Triggers A Chemical Reaction? - Kareem Jarrah

    2,371 views / 3 likes - added

    View full lesson: http://ed.ted.com/lessons/what-triggers-a-chemical-reaction-kareem-jarrah Chemicals are in everything we see, and the reactions between them can look like anything from rust on a spoon to an explosion on your stovetop. But why do these r

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  • 09:15 Popular What is Chemical Evolution?

    What is Chemical Evolution?

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    Have you ever wondered how life first got started on Earth? So do scientists! Though the question has not yet been fully answered, a careful study of Chemical Evolution is beginning to shed light on this mystery. In this film you will learn what Chemical

  • 03:59 Popular Why The Arctic Is Climate Change's Canary In The Coal Mine - William Chapman

    Why The Arctic Is Climate Change's Canary In The Coal Mine - William Chapman

    957 views / 2 likes - added

    View full lesson: http://ed.ted.com/lessons/why-the-arctic-is-climate-change-s-canary-in-the-coal-mine-william-chapman The Arctic may seem like a frozen and desolate environment where nothing ever changes. But the climate of this unique and remote region

  • 05:16 Popular Einstein's Miracle Year - Larry Lagerstrom

    Einstein's Miracle Year - Larry Lagerstrom

    714 views / 0 likes - added

    View full lesson here: http://ed.ted.com/lessons/einstein-s-miracle-year-larry-lagerstrom As the year 1905 began, Albert Einstein faced life as a “failed” academic. Yet within the next twelve months, he would publish four extraordinary papers, each on a d

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  • 04:07 Popular Could A Blind Eye Regenerate? - David Davila

    Could A Blind Eye Regenerate? - David Davila

    1,313 views / 1 likes - added

    View full lesson here: http://ed.ted.com/lessons/could-a-blind-eye-regenerate-david-davila We tend to think of blindness as something you're born with, but with certain genetic diseases, it can actually develop when you’re a kid, or even when you’re an ad

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  • 04:36 Popular How Do Vaccines Work? - Kelwalin Dhanasarnsombut

    How Do Vaccines Work? - Kelwalin Dhanasarnsombut

    815 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/how-do-vaccines-work-kelwalin-dhanasarnsombut The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to

  • 05:18 How Spontaneous Brain Activity Keeps You Alive - Nathan S. Jacobs

    How Spontaneous Brain Activity Keeps You Alive - Nathan S. Jacobs

    656 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/how-spontaneous-brain-activity-keeps-you-alive-nathan-s-jacobs The wheels in your brain are constantly turning, even when you're asleep or not paying attention. In fact, most of your brain’s activities are ones

  • 04:44 Popular The Evolution Of The Human Eye - Joshua Harvey

    The Evolution Of The Human Eye - Joshua Harvey

    2,240 views / 3 likes - added

    View full lesson: http://ed.ted.com/lessons/the-evolution-of-the-human-eye-joshua-harvey The human eye is an amazing mechanism, able to detect anywhere from a few photons to a few quadrillion, or switch focus from the screen in front of you to the distant

  • 05:39 Popular The Atlantic Slave Trade: What Too Few Textbooks Told You - Anthony Hazard

    The Atlantic Slave Trade: What Too Few Textbooks Told You - Anthony Hazard

    924 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/the-atlantic-slave-trade-what-your-textbook-never-told-you-anthony-hazard Slavery has occurred in many forms throughout the world, but the Atlantic slave trade -- which forcibly brought more than 10 million Afri

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

    What Is A Gift Economy? - Alex Gendler

    767 views / 2 likes - added

    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

  • 05:48 Popular I'm Batman - Amy Wray

    I'm Batman - Amy Wray

    905 views / 4 likes - added

    View full lesson: http://ed.ted.com/lessons/i-m-batman-amy-wray What flies through the night, silently guarding and protecting our world from evil? Batman? Try...a bat. Like Batman, bats are widely misunderstood and vilified. Amy Wray disproves the myth t

  • 05:58 Popular The Great Conspiracy Against Julius Caesar - Kathryn Tempest

    The Great Conspiracy Against Julius Caesar - Kathryn Tempest

    762 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/the-great-conspiracy-against-julius-caesar-kathryn-tempest On March 15th, 44 BCE, Roman dictator Julius Caesar was assassinated by a group of about 60 of his own senators. Why did these self-titled Liberators wa

  • 04:01 Popular What We Know (and Don't Know) About Ebola - Alex Gendler

    What We Know (and Don't Know) About Ebola - Alex Gendler

    761 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/what-we-know-and-don-t-know-about-ebola-alex-gendler The highly virulent Ebola virus has seen a few major outbreaks since it first appeared in 1976 -- with the worst epidemic occurring in 2014. How does the viru

  • 04:27 Popular The Hidden Worlds Within Natural History Museums - Joshua Drew

    The Hidden Worlds Within Natural History Museums - Joshua Drew

    896 views / 0 likes - added

    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

  • 04:34 Popular The Pharaoh That Wouldn't Be Forgotten - Kate Narev

    The Pharaoh That Wouldn't Be Forgotten - Kate Narev

    1,179 views / 3 likes - added

    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

  • 04:44 Popular How Does Cancer Spread Through The Body? - Ivan Seah Yu Jun

    How Does Cancer Spread Through The Body? - Ivan Seah Yu Jun

    1,348 views / 2 likes - added

    View full lesson: http://ed.ted.com/lessons/how-does-cancer-spread-through-the-body-ivan-seah-yu-jun Cancer usually begins with one tumor in a specific area of the body. But if the tumor is not removed, cancer has the ability to spread to nearby organs as

  • 04:46 Popular The Mighty Mathematics Of The Lever - Andy Peterson And Zack Patterson

    The Mighty Mathematics Of The Lever - Andy Peterson And Zack Patterson

    1,235 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/the-mighty-mathematics-of-the-lever-andy-peterson-and-zack-patterson Archimedes once said “Give me a place to stand, and I shall move the Earth.” While the idea of a person moving such a huge mass on their own m

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  • 05:54 Popular How To Create Cleaner Coal - Emma Bryce

    How To Create Cleaner Coal - Emma Bryce

    791 views / 0 likes - added

    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

  • 05:23 Popular Why Elephants Never Forget - Alex Gendler

    Why Elephants Never Forget - Alex Gendler

    1,105 views / 3 likes - added

    View full lesson: http://ed.ted.com/lessons/why-elephants-never-forget-alex-gendler It’s a common saying that elephants never forget. But the more we learn about elephants, the more it appears that their impressive memory is only one aspect of an incredib

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  • 07:02 Popular How To Understand Power - Eric Liu

    How To Understand Power - Eric Liu

    957 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/how-to-understand-power-eric-liu Every day, we move and operate within systems of power that other people have constructed. But we’re often uncomfortable talking about power. Why? Eric Liu describes the six sour

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  • 03:25 Popular What Does The Liver Do? - Emma Bryce

    What Does The Liver Do? - Emma Bryce

    1,603 views / 1 likes - added

    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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  • 03:42 Popular How Do Scars Form? - Sarthak Sinha

    How Do Scars Form? - Sarthak Sinha

    732 views / 2 likes - added

    View full lesson: http://ed.ted.com/lessons/how-do-scars-form-sarthak-sinha It’s hard to escape childhood without racking up a few scars. Why do these leftover reminders of a painful cut or crash look different from the rest of our skin? And why do they s

  • 04:01 How A Wound Heals Itself - Sarthak Sinha

    How A Wound Heals Itself - Sarthak Sinha

    663 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/how-a-wound-heals-itself-sarthak-sinha Our skin is the largest organ in our bodies, with a surface area of about 20 square feet in adults. When we are cut or wounded, our skin begins to repair itself through a c

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  • 05:38 Ideasthesia: How Do Ideas Feel? - Danko Nikolić

    Ideasthesia: How Do Ideas Feel? - Danko Nikolić

    649 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/ideasthesia-how-do-ideas-feel-danko-nikolic The traditional model of our mental function is that first our senses provide data to our brain, which then translates those senses into the appropriate mental phenome

  • 04:11 Is Our Climate Headed For A Mathematical Tipping Point? - Victor J. Donnay

    Is Our Climate Headed For A Mathematical Tipping Point? - Victor J. Donnay

    628 views / 0 likes - added

    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

  • 05:07 Popular How Do Germs Spread (and Why Do They Make Us Sick)? - Yannay Khaikin And Nicole Mideo

    How Do Germs Spread (and Why Do They Make Us Sick)? - Yannay Khaikin And Nicole Mideo

    758 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/how-do-germs-spread-and-why-do-they-make-us-sick-yannay-khaikin-and-nicole-mideo Germs are found on almost every surface we come in contact with, which makes it incredibly common for our bodies to be exposed to

  • 05:23 Popular A Different Way To Visualize Rhythm - John Varney

    A Different Way To Visualize Rhythm - John Varney

    946 views / 0 likes - added

    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

  • 04:46 Popular How Do We Study The Stars? - Yuan-Sen Ting

    How Do We Study The Stars? - Yuan-Sen Ting

    1,582 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/how-do-we-study-the-stars-yuan-sen-ting Our best technology can send men to the Moon and probes to the edge of our solar system, but these distances are vanishingly small compared to the size of the universe. Ho

  • 05:30 Popular Light Seconds, Light Years, Light Centuries: How To Measure Extreme Distances - Yuan-Sen Ting

    Light Seconds, Light Years, Light Centuries: How To Measure Extreme Distances - Yuan-Sen Ting

    949 views / 2 likes - added

    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

  • 04:39 Popular The Unexpected Math Behind Van Gogh's

    The Unexpected Math Behind Van Gogh's

    771 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/the-unexpected-math-behind-van-gogh-s-starry-night-natalya-st-clair Physicist Werner Heisenberg said, “When I meet God, I am going to ask him two questions: why relativity? And why turbulence? I really bel

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  • 05:10 Einstein's Brilliant Mistake: Entangled States - Chad Orzel

    Einstein's Brilliant Mistake: Entangled States - Chad Orzel

    669 views / 0 likes - added

    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

  • 05:23 Popular Is Telekinesis Real? - Emma Bryce

    Is Telekinesis Real? - Emma Bryce

    2,477 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/is-telekinesis-real-emma-bryce Telekinesis, the ability to manipulate matter with the mind alone, is a trait exhibited by some of the most iconic fictional characters, including Neo, Yoda, and, of course, Carrie

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  • 05:20 Popular The Great Brain Debate - Ted Altschuler

    The Great Brain Debate - Ted Altschuler

    736 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/the-great-brain-debate-ted-altschuler Throughout history, scientists have proposed conflicting ideas on how the brain carries out functions like perception, memory, and movement. Is each of these tasks carried o

  • 04:52 Popular Particles And Waves: The Central Mystery Of Quantum Mechanics - Chad Orzel

    Particles And Waves: The Central Mystery Of Quantum Mechanics - Chad Orzel

    803 views / 0 likes - added

    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

  • 04:24 Popular Where Do Genes Come From? - Carl Zimmer

    Where Do Genes Come From? - Carl Zimmer

    1,796 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/where-do-genes-come-from-carl-zimmer When life emerged on Earth about 4 billion years ago, the earliest microbes had a set of basic genes that succeeded in keeping them alive. In the age of humans and other larg

  • 04:44 Popular What Is The Heisenberg Uncertainty Principle? - Chad Orzel

    What Is The Heisenberg Uncertainty Principle? - Chad Orzel

    1,545 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/what-is-the-heisenberg-uncertainty-principle-chad-orzel The Heisenberg Uncertainty Principle states that you can never simultaneously know the exact position and the exact speed of an object. Why not? Because ev

  • 03:38 Popular Could Comets Be The Source Of Life On Earth? - Justin Dowd

    Could Comets Be The Source Of Life On Earth? - Justin Dowd

    1,588 views / 4 likes - added

    View full lesson: http://ed.ted.com/lessons/could-comets-be-the-source-of-life-on-earth-justin-dowd While comets were historically thought to be ill omens of war and famine, recent science has revealed that these celestial wonders actually contain amino a

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  • 06:40 Popular Cloudy Climate Change: How Clouds Affect Earth's Temperature - Jasper Kirkby

    Cloudy Climate Change: How Clouds Affect Earth's Temperature - Jasper Kirkby

    722 views / 2 likes - added

    View full lesson: http://ed.ted.com/lessons/cloudy-climate-change-how-clouds-affect-earth-s-temperature-jasper-kirkby As the Earth’s surface temperature gradually rises, it has become vital for us to predict the rate of this increase with as much precisio

  • 04:40 Popular How Cosmic Rays Help Us Understand The Universe - Veronica Bindi

    How Cosmic Rays Help Us Understand The Universe - Veronica Bindi

    703 views / 0 likes - added

    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?

  • 02:55 If Matter Falls Down, Does Antimatter Fall Up? - Chloé Malbrunot

    If Matter Falls Down, Does Antimatter Fall Up? - Chloé Malbrunot

    645 views / 0 likes - added

    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

  • 04:51 Popular Corruption, Wealth And Beauty: The History Of The Venetian Gondola - Laura Morelli

    Corruption, Wealth And Beauty: The History Of The Venetian Gondola - Laura Morelli

    787 views / 1 likes - added

    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

  • 04:32 Popular The Chemistry Of Cold Packs - John Pollard

    The Chemistry Of Cold Packs - John Pollard

    769 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/how-do-cold-packs-get-cold-so-fast-john-pollard If you stick water in the freezer, it will take a few hours to freeze into ice. How is it, then, that cold packs go from room temperature to near freezing in mere

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  • 03:48 Popular What Did Dogs Teach Humans About Diabetes? - Duncan C. Ferguson

    What Did Dogs Teach Humans About Diabetes? - Duncan C. Ferguson

    906 views / 2 likes - added

    View full lesson: http://ed.ted.com/lessons/what-did-dogs-teach-humans-about-diabetes-duncan-c-ferguson Diabetes has a history dating back to Ancient Greece. Our treatment of it, however, is more recent and was originally made possible with the help of ma

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  • 04:13 Popular The Past, Present And Future Of The Bubonic Plague - Sharon N. DeWitte

    The Past, Present And Future Of The Bubonic Plague - Sharon N. DeWitte

    752 views / 1 likes - added

    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

  • 05:11 Popular Feedback Loops: How Nature Gets Its Rhythms - Anje-Margriet Neutel

    Feedback Loops: How Nature Gets Its Rhythms - Anje-Margriet Neutel

    1,844 views / 0 likes - added

    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

  • 04:32 Popular Why We Love Repetition In Music - Elizabeth Hellmuth Margulis

    Why We Love Repetition In Music - Elizabeth Hellmuth Margulis

    1,087 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/why-we-love-repetition-in-music-elizabeth-hellmuth-margulis How many times does the chorus repeat in your favorite song? How many times have you listened to that chorus? Repetition in music isn’t just a feature

  • 05:24 Popular What Can Schrödinger's Cat Teach Us About Quantum Mechanics? - Josh Samani

    What Can Schrödinger's Cat Teach Us About Quantum Mechanics? - Josh Samani

    787 views / 0 likes - added

    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

  • 05:26 Popular What Happens When You Remove The Hippocampus? - Sam Kean

    What Happens When You Remove The Hippocampus? - Sam Kean

    790 views / 0 likes - added

    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

  • 04:00 Popular The Secret Lives Of Baby Fish - Amy McDermott

    The Secret Lives Of Baby Fish - Amy McDermott

    846 views / 1 likes - added

    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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  • 04:35 Popular What Causes Antibiotic Resistance? - Kevin Wu

    What Causes Antibiotic Resistance? - Kevin Wu

    1,518 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/how-antibiotics-become-resistant-over-time-kevin-wu Right now, you are inhabited by trillions of microorganisms. Many of these bacteria are harmless (or even helpful!), but there are a few strains of ‘super bact

  • 04:12 Popular How Do Tornadoes Form? - James Spann

    How Do Tornadoes Form? - James Spann

    2,867 views / 27 likes - added

    View full lesson: http://ed.ted.com/lessons/how-do-tornadoes-form-james-spann Tornadoes are the most violent storms on Earth, with wind velocities that can exceed 200 miles per hour. How do these terrifying cyclones form? Meteorologist James Spann sheds l

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  • 04:17 Popular The Coelacanth: A Living Fossil Of A Fish - Erin Eastwood

    The Coelacanth: A Living Fossil Of A Fish - Erin Eastwood

    1,066 views / 0 likes - added

    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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  • 04:55 Popular The Nurdles' Quest For Ocean Domination - Kim Preshoff

    The Nurdles' Quest For Ocean Domination - Kim Preshoff

    820 views / 0 likes - added

    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

  • 04:46 Popular The History Of The Barometer (and How It Works) - Asaf Bar-Yosef

    The History Of The Barometer (and How It Works) - Asaf Bar-Yosef

    1,148 views / 1 likes - added

    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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  • 04:07 What Light Can Teach Us About The Universe - Pete Edwards

    What Light Can Teach Us About The Universe - Pete Edwards

    647 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/what-light-can-teach-us-about-the-universe-pete-edwards Humanity has long been looking at the universe and asking the big questions: How did it begin? How will it end? Cosmologists are searching hard for the ans

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  • 04:47 Popular What's Hidden Among The Tallest Trees On Earth? - Wendell Oshiro

    What's Hidden Among The Tallest Trees On Earth? - Wendell Oshiro

    828 views / 1 likes - added

    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

  • 04:45 Popular How Playing An Instrument Benefits Your Brain - Anita Collins

    How Playing An Instrument Benefits Your Brain - Anita Collins

    878 views / 0 likes - added

    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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  • 04:34 Popular Under The Hood: The Chemistry Of Cars - Cynthia Chubbuck

    Under The Hood: The Chemistry Of Cars - Cynthia Chubbuck

    787 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/under-the-hood-the-chemistry-of-cars-cynthia-chubbuck There are over one billion cars in the world right now, getting people from point A to point B. But cars aren't just a mode of transportation; they also teac

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  • 03:54 Popular What Happens When You Get Heat Stroke? - Douglas J. Casa

    What Happens When You Get Heat Stroke? - Douglas J. Casa

    1,165 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/what-happens-when-you-get-heat-stroke-douglas-j-casa Have you ever suffered from exertional heat stroke? This condition is caused by intense activity in the heat and is one of the top three killers of athletes a

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  • 05:01 Popular How Quantum Mechanics Explains Global Warming - Lieven Scheire

    How Quantum Mechanics Explains Global Warming - Lieven Scheire

    1,554 views / 2 likes - added

    View full lesson: http://ed.ted.com/lessons/how-quantum-mechanics-explains-global-warming-lieven-scheire You've probably heard that carbon dioxide is warming the Earth. But how exactly is it doing it? Lieven Scheire uses a rainbow, a light bulb and a bit

  • 04:26 Popular What Makes Tattoos Permanent? - Claudia Aguirre

    What Makes Tattoos Permanent? - Claudia Aguirre

    948 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/what-makes-tattoos-permanent-claudia-aguirre The earliest recorded tattoo was found on a Peruvian mummy in 6,000 BC. That's some old ink! And considering humans lose roughly 40,000 skin cells per hour, how do th

  • 04:47 Popular Inside The Ant Colony - Deborah M. Gordon

    Inside The Ant Colony - Deborah M. Gordon

    841 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/inside-the-ant-colony-deborah-m-gordon Ants have one of the most complex social organizations in the animal kingdom; they live in structured colonies that contain different types of members who perform specific

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  • 03:19 Popular How Heavy Is Air? - Dan Quinn

    How Heavy Is Air? - Dan Quinn

    1,149 views / 0 likes - added

    View full lesson: http://ed.ted.com/lessons/how-heavy-is-air-dan-quinn Too often we think of air as empty space — but compared to a vacuum, air is actually pretty heavy. So, just how heavy is it? And if it's so heavy, why doesn't it crush us? Dan Quinn de

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  • 03:37 Popular The Time Value Of Money - German Nande

    The Time Value Of Money - German Nande

    916 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/how-to-calculate-the-future-value-of-your-cash-german-nande We've all heard the phrase "Time is money." But what do these two things actually have to do with one another? German Nande explains the math behind in

  • 03:39 Popular What You Might Not Know About The Declaration Of Independence - Kenneth C. Davis

    What You Might Not Know About The Declaration Of Independence - Kenneth C. Davis

    880 views / 2 likes - added

    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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  • 04:44 Popular A Guide To The Energy Of The Earth - Joshua M. Sneideman

    A Guide To The Energy Of The Earth - Joshua M. Sneideman

    1,623 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/a-guide-to-the-energy-of-the-earth-joshua-m-sneideman Energy is neither created nor destroyed — and yet the global demand for it continues to increase. But where does energy come from, and where does it go? Josh

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  • 05:14 Popular How To Speak Monkey: The Language Of Cotton-top Tamarins - Anne Savage

    How To Speak Monkey: The Language Of Cotton-top Tamarins - Anne Savage

    1,128 views / 3 likes - added

    View full lesson: http://ed.ted.com/lessons/do-you-speak-monkey-the-language-of-cotton-top-tamarins-anne-savage The cotton-top tamarin is a very vocal monkey -- the species communicates using a sophisticated language of 38 distinct and grammatically struc

  • 04:08 Popular What's The Loudest Possible Sound?

    What's The Loudest Possible Sound?

    1,136 views / 2 likes - added

    It’s definitely higher than “11” Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ What is the loudest possible sound? What about the quietest thing we can hear? And what do decibels measure, anyway? In this video

  • 04:28 Popular Sesame Street: Old MacMurray Had A Farm

    Sesame Street: Old MacMurray Had A Farm

    1,217 views / 0 likes - added

    Old MacMurray had a farm and on that farm he had a chicken…. Wait, what sound does a chicken make? Bok Bok. Oh yeah, that’s right. Make moo-sic and join Old MacMurray as he sings about his farm animals. Subscribe to the Sesame Street Channel here: http://

  • 04:34 Popular Zony & Yony On Their Favorite Animals

    Zony & Yony On Their Favorite Animals

    792 views / 0 likes - added

    These two adorable, 7-year-old twins from Taiwan are picking up lots of English, and sharing it all with Ellen.

  • 07:10 The 'Everything' Formula - Numberphile

    The 'Everything' Formula - Numberphile

    669 views / 0 likes - added

    Matt Parker discusses Tupper's Self-Referential Formula. Matt's book on Amazon (US): http://bit.ly/Matt_4D_US Matt's book on Amazon (UK): http://bit.ly/Matt_4D_UK A little bit of extra footage from this video: http://youtu.be/wx22jdwn5zQ Thanks to our Pat

  • 03:44 Something Special About 399 (and 2015) - Numberphile

    Something Special About 399 (and 2015) - Numberphile

    617 views / 0 likes - added

    It is the lowest Lucas-Carmichael Number... Featuring Ed Copeland. More about Ed's real work: http://bit.ly/CopelandGoesLong With thanks to these Patreon supporters: Herschal Sanders (from Susan) Today I Found Out Lê OK Merli Alex Bozzi Thomas J Petersen

  • 07:43 Popular How To Trisect An Angle With Origami - Numberphile

    How To Trisect An Angle With Origami - Numberphile

    746 views / 0 likes - added

    Zsuzsanna Dancso trisects an angle using origami - follows on from this video about Euclidean geometry: http://youtu.be/6Lm9EHhbJAY Special thanks to the Patreon supporters listed below: Herschal Sanders (from Susan) Lê OK Merli Alex Bozzi Thomas J

  • 03:55 Popular Mansa Musa, One Of The Wealthiest People Who Ever Lived - Jessica Smith

    Mansa Musa, One Of The Wealthiest People Who Ever Lived - Jessica Smith

    895 views / 0 likes - added

    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

  • 04:20 Popular How Batteries Work - Adam Jacobson

    How Batteries Work - Adam Jacobson

    1,531 views / 1 likes - added

    View full lesson: http://ed.ted.com/lessons/why-batteries-die-adam-jacobson Batteries are a triumph of science—they allow smartphones and other technologies to exist without anchoring us to an infernal tangle of power cables. Yet even the best batteries w

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  • 04:51 Popular Debunking The Myths Of OCD - Natascha M. Santos

    Debunking The Myths Of OCD - Natascha M. Santos

    1,725 views / 0 likes - added

    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

  • 12:16 Popular Saturn: Crash Course Astronomy #18

    Saturn: Crash Course Astronomy #18

    1,022 views / 6 likes - added

    Saturn is the crown jewel of the solar system, beautiful and fascinating. It is a gas giant, and has a broad set of rings made of ice particles. Moons create gaps in the rings via their gravity. Saturn has dozens of moons, including Titan, which is as big

  • 03:19 Popular The Dirt On Decomposers: Crash Course Kids #7.2

    The Dirt On Decomposers: Crash Course Kids #7.2

    2,112 views / 3 likes - added

    We've talked about food chains and how energy moves through an ecosystem, but let's take a step back and see how everything starts... and ends. Decomposers! This first series is based on 5th grade science. We're super excited and hope you enjoy Crash Cour

  • 03:25 Popular Fabulous Food Chains: Crash Course Kids #7.1

    Fabulous Food Chains: Crash Course Kids #7.1

    1,406 views / 4 likes - added

    Everyone eats, right? But how does that food get the energy to power you? In this episode of Crash Course Kids, Sabrina talks about the way energy moves, or flows, through an ecosystem and how that movement forms Food Chains! This first series is based on

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  • 03:00 Popular Vegetation Transformation: Crash Course Kids #5.2

    Vegetation Transformation: Crash Course Kids #5.2

    1,092 views / 0 likes - added

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