TED-Ed
TED-Ed: Oxygen's surprisingly complex journey through your body - Enda Butler
Oxygen forms about 21% of the air around us. In your body, oxygen forms a vital role in the production of energy in most cells. But if gases can only efficiently diffuse across tiny distances, how does oxygen reach the cells deep inside...
TED Talks
TED: Never, ever give up | Diana Nyad
In the pitch-black night, stung by jellyfish, choking on salt water, singing to herself, hallucinating … Diana Nyad just kept on swimming. And that's how she finally achieved her lifetime goal as an athlete: an extreme 100-mile swim from...
SciShow Kids
What is a Blizzard? | Winter Science | Weather Science | SciShow Kids
Usually when it's snowing outside, it's really calm, pretty, and fun to play in! But there are certain types of big snowstorms, called blizzards, that can get really windy, wild, and even dangerous!
TED Talks
TED: Make your actions on climate reflect your words⇥ | Severn Cullis-Suzuki
History has shown us that in moments of crisis, society can truly transform, says environmental educator Severn Cullis-Suzuki. Nearly 30 years ago, at just 12 years old, she spoke at the UN's Earth Summit in hopes of reversing the...
TED Talks
TED: Did you hear the one about the Iranian-American? | Maz Jobrani
A founding member of the Axis of Evil Comedy Tour, standup comic Maz Jobrani riffs on the challenges and conflicts of being Iranian-American -- "like, part of me thinks I should have a nuclear program; the other part thinks I can't be...
TED-Ed
TED-Ed: What does the world's largest machine do? | Henry Richardson
In 1967, Homer Loutzenheuser flipped a switch and connected the power grids of the United States, forming one interconnected machine. Today, the US power grid is the world's largest machine, containing more than 7,300...
MinutePhysics
E=mc2 is Incomplete
You've heard of E=mc2... but you probably haven't heard the whole story.
Crash Course
Witchcraft: Crash Course European History
During our last several episodes, Europe and the European-controlled world have been in crisis. Wars, disease, climate changes, and shifts in religious and political power threw the European world into turmoil. People were looking for a...
TED Talks
TED: How urban spaces can preserve history and build community | Walter Hood
Can public spaces both reclaim the past and embrace the future? Landscape architect Walter Hood has explored this question over the course of an iconic career, with projects ranging from Lafayette Square Park in San Francisco to the...
TED-Ed
TED-Ed: What is depression? - Helen M. Farrell
Depression is the leading cause of disability in the world; in the United States, close to ten percent of adults struggle with the disease. But because it's a mental illness, it can be a lot harder to understand than, say, high...
TED Talks
Bruce McCall: What is retro-futurism?
Bruce McCall paints a retro-future that never happened -- full of flying cars, polo-playing tanks and the RMS Tyrannic, "The Biggest Thing in All the World." At Serious Play '08, he narrates a brisk and funny slideshow of his...
SciShow
Why Do Some Harmonies Sound Prettier Than Others?
Whether your favorite band is One Direction or Slayer, you can probably tell tense chords from relaxed ones, but what exactly gives them those qualities?
SciShow
Where Are All the Dead Animals
We are surrounded by wildlife, like pigeons and squirrels, all the time. Sadly, all those animals eventually die, but why don't we see carcasses on the street? Where do they go?
SciShow
Why You Can't Win an Internet Argument
One of the internet's favorite pastimes is arguing, but very few of those arguments ever actually go anywhere. It can be frustrating to watch, but scientists have some ideas on why things play out the way they do.
TED Talks
TED: How college loans exploit students for profit | Sajay Samuel
Once upon a time in America, says professor Sajay Samuel, "going to college did not mean graduating with debt." Today, higher education has become a consumer product -- costs have skyrocketed, saddling students with a combined debt of...
TED-Ed
TED-ED: How do executive orders work? - Christina Greer
On January 1, 1863, Abraham Lincoln legally changed the status of over 3 million people from "slave" to "free." But his emancipation proclamation wasn't a law - it was an executive order. The framers of the American Constitution made...
TED Talks
Pamelia Kurstin: The untouchable music of the theremin
Virtuoso Pamelia Kurstin performs and discusses her theremin, the not-just-for-sci-fi electronic instrument that is played without being touched. Songs include "Autumn Leaves," "Lush Life" and David Mash’s "Listen, Words Are Gone."
TED Talks
Nadia Al-Sakkaf: See Yemen through my eyes
As political turmoil in Yemen continues, the editor of the Yemen Times, Nadia Al-Sakkaf, talks at TEDGlobal with host Pat Mitchell. Al-Sakkaf's independent, English-language paper is vital for sharing news -- and for sharing a new vision...
Bozeman Science
Gravitational Force
In this video Paul Andersen explains how an object with mass placed in a gravitational field experiences a gravitational force. On the Earth this gravitational force is known as weight. The gravitational force is equal to the product of...
TED-Ed
TED-ED: How brain 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 behavior of their hosts to improve their own survival -- sometimes even by direct...
Crash Course
The Integumentary System, Part 2 - Skin Deeper: Crash Course A&P
Today Hank wraps up this look at your integumentary system and all the hard work it does protecting you from and helping you interact with the world around you. -- Table of Contents: Protects Your Body 1:25 Senses the Outside World 1:42...
TED Talks
Marc Koska: 1.3m reasons to re-invent the syringe
Reuse of syringes, all too common in under-funded clinics, kills 1.3 million each year. Marc Koska clues us in to this devastating global problem with facts, photos and hidden-camera footage. He shares his solution: a low-cost syringe...
TED-Ed
TED-Ed: The dangerous race for the South Pole - Elizabeth Leane
By the early 1900’s, nearly every region of the globe had been visited and mapped, with only two key locations left: the North and South Poles. After two Americans staked claim to reaching the North Pole, a Norwegian explorer and a...
MinuteEarth
Why Earthquakes Are So Hard To Predict
Scientists are trying to figure out if they can predict big earthquakes by simulating small quakes in labs and studying big quakes under the ocean. Thanks to the University of Rhode Island for sponsoring this video....