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Crash Course
Human Evolution: Crash Course Big History
In which John Green and Hank Green teach you about how human primates moved out of Africa and turned Earth into a real-life Planet of the Apes. And the apes are people! John and Hank teach you about how humans evolved, and the sort of...
SciShow
How Extreme Microbes Are Helping Us Test for COVID-19
Microbes that live in extreme environments, like geysers and hydrothermal vents, are able to survive in extreme temperatures. Scientists have figured out ways to use this thermostability to supercharge DNA studies, including the study of...
SciShow
Why Psychology Tells Us What We Already Know
Hindsight bias skews our interpretation of events and information, making it seem like they were predictable or just not that surprising. This bias can cause some real problems, but the good news is, once you are aware of it, there are...
TED-Ed
TED-Ed: Vultures: The acid-puking, plague-busting heroes of the ecosystem | Kenny Coogan
In the African grasslands, a gazelle suffering from tuberculosis takes its last breath. The animal's corpse threatens to infect the water, but for the vulture, this isn't a problem: it's a feast. With a stomach of steel that can digest...
TED Talks
Will Hurd: A wall won't solve America's border problems
"Building a 30-foot-high concrete structure from sea to shining sea is the most expensive and least effective way to do border security," says Congressman Will Hurd, a Republican from Texas whose district encompasses two times zones and...
SciShow
ASMR: That Happy, Tingly Feeling
Hundreds of thousands of people get a tingling sensation, called ASMR, from things like whispering or personal attention. Here's what science has to say about it.
Crash Course
Unit Conversion & Significant Figures: Crash Course Chemistry
A unit is the frequently arbitrary designation we have given to something to convey a definite magnitude of a physical quantity and every quantity can be expressed in terms of the seven base units that are contained in the...
TED-Ed
What if every satellite suddenly disappeared? | Moriba Jah
What would happen if one day all of humanity's artificial satellites suddenly disappeared? Within hours, most of the planet's traffic would grind to a halt, the world economy would shut down, and most countries would declare a state of...
SciShow
How to Supercool Water: A SciShow Experiment
Water doesn't always freeze when it's supposed to. Learn about supercooling, and how to supercool a bottle of water at home -- and then turn it to ice instantly!
Bozeman Science
Energy Concepts
In this video Paul Andersen explains the different forms and units for energy. A discussion of the laws of thermodynamics is also included. Sample conversion problems using dimensional analysis is also included.
Be Smart
The Superb Owl!
As we get ready to watch that big football game that my lawyers tell me I'm not allowed to say the name of, let's celebrate a champion of the bird world: Stealthy and silent owls! Learn how owls fly so silently, how they see in the dark,...
SciShow
Why Is Only Half of My Nose Working?
Ever notice how one side of your nose always seems to be more stuffed than the other? What's up with that? Quick Questions knows!
TED Talks
TED: These robots come to the rescue after a disaster | Robin Murphy
When disaster strikes, who's first on the scene? More and more, it’s a robot. In her lab, Robin Murphy builds robots that fly, tunnel, swim and crawl through disaster scenes, helping firefighters and rescue workers save more lives safely...
SciShow
What Happens When You Hold Your Pee?
Can holding your pee be bad for you? Learn about your bladder in this Quick Question with Michael Aranda!
TED Talks
TED: 3 ways to create a space that moves you, from a Broadway set designer | David Korins
You don't have to work on Broadway to design a set, says creative director David Korins -- you can be the set designer of any space in your life. Sharing insights from his work on hits like "Hamilton" and "Dear Evan Hansen," Korins...
Bozeman Science
The Factor-Label Method
Mr. Andersen shows you how to use the factor label method to solve complex conversions.
SciShow
4 Important Lessons from the Apollo 11 Moon Landing
SciShow Space celebrates the 45th anniversary of the first moon landing by highlighting just four of the most important things we learned from the Apollo 11 mission.
TED-Ed
TED-Ed: Reasons for the seasons - Rebecca Kaplan
Why do some regions experience full-time heat while others are reckoning with frigid temperatures and snow? And why are the seasons reversed in the two hemispheres? Rebecca Kaplan explains how the shape of the Earth's orbit around the...
SciShow
Is There Liquid Water on Mars?
Mars might be full of salty liquid water! Plus, a guide to the upcoming Lyrids meteor shower.
TED Talks
Jacqueline Woodson: What reading slowly taught me about writing
Reading slowly -- with her finger running beneath the words, even when she was taught not to -- has led Jacqueline Woodson to a life of writing books to be savored. In a lyrical talk, she invites us to slow down and appreciate stories...
Curated Video
British tourists stuck in Dubai describe their ordeal and attempts to make their way back home
British tourists stuck in Dubai describe their ordeal and attempts to make their way back homeCredit: Sky News via AP
Chasing Time English
Fortune Episode 3
Improve your English with our original drama series. In this episode, you’ll hear real English conversations, learn everyday expressions, and practice listening comprehension in a fun, story-driven format. For learners at the Upper...