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• 09:06

### Minimum Wage and Price Floors

272 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

253 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)

369 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

311 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

282 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

### Squared Error of Regression Line

393 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

363 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

### Proof (Part 3) Minimizing Squared Error to Regression Line

354 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

### Proof (Part 4) Minimizing Squared Error to Regression Line

395 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

### Proof Part 2 Minimizing Squared Error to Line

388 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

347 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

293 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

### Introduction to Astronomy: Crash Course Astronomy #1

378 views / 1 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

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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

### The Moon: Astronomy #12

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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

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

289 views / 1 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

### The Bobo Beatdown - Crash Course Psychology #12

489 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

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

343 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

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

430 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. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing th

• 12:57

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

465 views / 1 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

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

536 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

### Plant Cells: Crash Course Biology #6

629 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

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

451 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

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

477 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

### Evolutionary Development: Chicken Teeth - Crash Course Biology #17

393 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

765 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

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

385 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

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

437 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

313 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

### Chordates - CrashCourse Biology #24

329 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

### Animal Behavior - CrashCourse Biology #25

481 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

### Circulatory&Respiratory Systems - CrashCourse Biology #27

429 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

### The Digestive System: CrashCourse Biology #28

565 views / 3 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

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

667 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

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

465 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

### Vascular Plants = Winning! - Crash Course Biology #37

333 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

774 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

### Mesopotamia: Crash Course World History #3

380 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

### The Columbian Exchange: Crash Course World History #23

460 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

269 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

292 views / 0 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

### Sesame Street: "Alphabet Songs" Preview

339 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

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

434 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

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

288 views / 0 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

### Sesame Street: "Fairy Tale Fun!" Preview

367 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!

312 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

### Sesame Street: Sand Animals Sing a Song

541 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

### Sesame Street: Tropical Five

396 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

241 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

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

615 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

### Wild Thing: The Smithsonian National Zoo

596 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)

276 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

4,392 views / 48 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

1,145 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!

713 views / 0 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

### How Dinosaurs Are Born

479 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

### SUPER-CUTE VIDEO OF DINOSAUR BABIES!!!

481 views / 1 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

342 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

267 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

413 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…

349 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

### %\$?# Allergies!

356 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

### How Many Stars Are There?

411 views / 1 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

### What Color Is The Universe?

421 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

### Attack Of The Zombie Parasites!

409 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

### Why Does February Only Have 28 Days?

486 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

### How Many Heartbeats Do We Get?

350 views / 0 likes - added

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• 06:34

### Does My Dog Know What I'm Thinking?

489 views / 0 likes - added

• 05:45

### What's The Deadliest Animal In The World?

463 views / 2 likes - added

• 02:34 Popular

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

904 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

### Monkeying Around - Ultimate Animal Movie Mashup (2015) HD

458 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

### You Are An Upside-Down Lobster

377 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

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

540 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

### Would Headlights Work At Light Speed?

298 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

### Is Ultron Inevitable?

456 views / 0 likes - added

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

### How To Draw A Narwhal

639 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?

361 views / 1 likes - added

• 03:59

### Solution To The Impossible Bet

421 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

278 views / 0 likes - added

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

291 views / 0 likes - added

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?

373 views / 1 likes - added

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

291 views / 0 likes - added

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

282 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

### An Electric Eel And A Caiman

359 views / 0 likes - added

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

### OK Go - White Knuckles - Official Video

542 views / 0 likes - added

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

### OK Go - Last Leaf - Official Video

490 views / 0 likes - added

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

### Could We Clone Ourselves?

308 views / 0 likes - added

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

### Monkeys And Coconuts - Numberphile

403 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

### Winning At Rock Paper Scissors - Numberphile

500 views / 0 likes - added

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

### Disneynature's Born In China Official US Trailer

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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

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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

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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

### Why Do Your Knuckles Pop? - Eleanor Nelsen

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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

### What Causes Economic Bubbles? - Prateek Singh

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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

### What Is Leukemia? - Danilo Allegra And Dania Puggioni

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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

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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

### Could Your Brain Repair Itself? - Ralitsa Petrova

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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

### How To Unboil An Egg - Eleanor Nelsen

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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

### Why Is Biodiversity So Important? - Kim Preshoff

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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

### How Brass Instruments Work - Al Cannon

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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

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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

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

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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

### Eye Vs. Camera - Michael Mauser

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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

### How Do Geckos Defy Gravity? - Eleanor Nelsen

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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

### The Science Of Static Electricity - Anuradha Bhagwat

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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

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

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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

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

480 views / 1 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

### Plato’s Allegory Of The Cave - Alex Gendler

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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

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

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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

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

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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

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

493 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

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

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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

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

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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

### What Does The Pancreas Do? - Emma Bryce

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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

### History Vs. Richard Nixon - Alex Gendler

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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

### The Law Of Conservation Of Mass - Todd Ramsey

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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

### How We Think Complex Cells Evolved - Adam Jacobson

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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

### The Sonic Boom Problem - Katerina Kaouri

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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

### How Do Your Kidneys Work? - Emma Bryce

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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

### The History Of Museums - J. V. Maranto

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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

### How Poachers Became Caretakers - John Kasaona

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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

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

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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

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

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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

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

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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

### What Triggers A Chemical Reaction? - Kareem Jarrah

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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

### 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

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

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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

### Einstein's Miracle Year - Larry Lagerstrom

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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

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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

### How Do Vaccines Work? - Kelwalin Dhanasarnsombut

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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

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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

### The Evolution Of The Human Eye - Joshua Harvey

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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

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

477 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

### What Is A Gift Economy? - Alex Gendler

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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

### I'm Batman - Amy Wray

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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

### The Great Conspiracy Against Julius Caesar - Kathryn Tempest

386 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

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

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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

### The Hidden Worlds Within Natural History Museums - Joshua Drew

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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

### The Pharaoh That Wouldn't Be Forgotten - Kate Narev

579 views / 2 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

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

533 views / 1 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

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

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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

### How To Create Cleaner Coal - Emma Bryce

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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

### Why Elephants Never Forget - Alex Gendler

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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

### How To Understand Power - Eric Liu

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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

### What Does The Liver Do? - Emma Bryce

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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

### How Do Scars Form? - Sarthak Sinha

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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

383 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

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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

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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

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

428 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

### A Different Way To Visualize Rhythm - John Varney

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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

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

485 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

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

489 views / 1 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

### The Unexpected Math Behind Van Gogh's

467 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

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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

### Is Telekinesis Real? - Emma Bryce

524 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

### The Great Brain Debate - Ted Altschuler

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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

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

451 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

### Where Do Genes Come From? - Carl Zimmer

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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

### What Is The Heisenberg Uncertainty Principle? - Chad Orzel

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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

1,200 views / 3 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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• 04:20

### Music And Math: The Genius Of Beethoven - Natalya St. Clair

683 views / 1 likes - added

View full lesson: http://ed.ted.com/lessons/music-and-math-the-genius-of-beethoven-natalya-st-clair How is it that Beethoven, who is celebrated as one of the most significant composers of all time, wrote many of his most beloved songs while going deaf? Th

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• 06:40

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

384 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

### How Cosmic Rays Help Us Understand The Universe - Veronica Bindi

342 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

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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

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

456 views / 0 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

### The Chemistry Of Cold Packs - John Pollard

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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

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

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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

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

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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

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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

### Why We Love Repetition In Music - Elizabeth Hellmuth Margulis

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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

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

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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

### What Happens When You Remove The Hippocampus? - Sam Kean

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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

### The Secret Lives Of Baby Fish - Amy McDermott

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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

### What Causes Antibiotic Resistance? - Kevin Wu

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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

1,271 views / 17 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

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

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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

### The Nurdles' Quest For Ocean Domination - Kim Preshoff

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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

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

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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

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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

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

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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

### How Playing An Instrument Benefits Your Brain - Anita Collins

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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

### Under The Hood: The Chemistry Of Cars - Cynthia Chubbuck

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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

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

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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

### How Quantum Mechanics Explains Global Warming - Lieven Scheire

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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

### What Makes Tattoos Permanent? - Claudia Aguirre

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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

### Inside The Ant Colony - Deborah M. Gordon

469 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

### How Heavy Is Air? - Dan Quinn

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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

### The Time Value Of Money - German Nande

451 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

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

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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

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

565 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

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

624 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

### What's The Loudest Possible Sound?

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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

### Sesame Street: Old MacMurray Had A Farm

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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

### Zony & Yony On Their Favorite Animals

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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

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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

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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

### How To Trisect An Angle With Origami - Numberphile

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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

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

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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

### How Batteries Work - Adam Jacobson

390 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

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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

### Saturn: Crash Course Astronomy #18

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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

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