SciShow
What If Earth Picked Up a Second Moon?
We owe a lot to our moon. Beautiful moonlit walks, higher tides, and regular seasons - all are made possible by our little rocky friend. But what would happen if we picked up a second moon?
SciShow
New Watery Discoveries on Enceladus and Europa!
These days, it seems like we're finding water all over the solar system. Still, it takes a lot more than a little H2O to support life.
SciShow Kids
Be Prepared for Anything! Emergency Kit for Kids
Bad things can happen, but you can do a lot to be prepared for when they do! Join Jessi and Squeaks to learn what you should put in your emergency kit so you can be ready for anything!
SciShow
3 Deadly Diseases You've Probably Never Heard Of
There are some diseases, like Zika or malaria, that get a lot of media coverage. However, every year, millions of people are infected with diseases that are just as deadly that we never hear anything about.
TED-Ed
TED-Ed: 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, daredevil surgeon Dr. William Skoville removed H.M.'s hippocampus. Luckily, the...
Be Smart
The Strange Science of the Placebo Effect
How do sugar pills really interact with our bodies?
TED Talks
TED: There's no shame in taking care of your mental health | Sangu Delle
When stress got to be too much for TED Fellow Sangu Delle, he had to confront his own deep prejudice: that men shouldn't take care of their mental health. In a personal talk, Delle shares how he learned to handle anxiety in a society...
Bozeman Science
The Factor-Label Method
Mr. Andersen shows you how to use the factor label method to solve complex conversions.
SciShow
How 18th-Century Medicine Killed George Washington
What killed George Washington? Turns out it was probably related to the bloodletting and other 18th-century medicine his doctors applied.
TED Talks
TED: A next-gen cure for killer infections | Kary Mullis
(NOTE: This talk was given in 2009, and this field of science has developed quickly since then. Read "Criticisms & updates" below for more details.) Drug-resistant bacteria kills, even in top hospitals. But now tough infections like...
SciShow
Mutant Mosquitoes in Florida
In the search for longevity, scientists have found the longest-lived vertebrates on the planet in the arctic. Meanwhile, in warmer climes, the FDA approves a new method for combating disease-carrying mosquitoes.
Crash Course
Battles of the Civil War Crash Course US History
Disclaimer: This is very different than the usual Crash Course US History episode. In which John Green lists a whole lot of the battles of the US Civil War in seven and a half minutes. We get a lot of requests for military history, so we...
SciShow Kids
Why Do Leaves Change Colors in the Fall?
Autumn means leaves are turning different shades of red, orange, and yellow and falling to the ground. But why? Jessi takes you deep inside a leaf to explain!
Curated Video
Islam, the Quran, and the Five Pillars All Without a Flamewar: Crash Course World History
In which John Green teaches you the history of Islam, including the revelation of the Qu'ran to Muhammad, the five pillars of Islam, how the Islamic empire got its start, the Rightly Guided Caliphs, and more. Learn about hadiths, Abu...
TED-Ed
TED-Ed: A year in the life of one of Earth's weirdest animals | Gilad Bino
Waddling along the parched Australian earth, a female platypus is searching for fresh water. Over the past year, a severe drought turned rivers and streams to mere trickles. She barely survived and was unable to reproduce. Could the next...
SciShow
The Science of Chocolate
While you unwrap that luscious truffle, let Hank explain the science of chocolate -- where it comes from, what its active ingredient is, and how it works. Also learn the difference between chocolate, cocoa, cacao and coca, so you really...
Crash Course
Memory: Crash Course Study Skills
An essential part of learning and studying is remembering things, so this week Thomas explains some of how your memory works so that you can spend less time working against your memory's limitations and more time playing to its real...
TED-Ed
What really happened during the Attica Prison Rebellion | Orisanmi Burton
On September 9th 1971, a spontaneous uprising began in a New York State prison. A group of prisoners overpowered guards, broke windows, started fires, and captured supplies, sparking the Attica Rebellion. Soon, over 1,200 prisoners had...
TED Talks
TED: A queer journey from shame to self-love | Crystal Rasmussen
TED talks about a queer journey from shame to self-love | Crystal Rasmussen
Crash Course
Lab Techniques & Safety: Crash Course Chemistry
Hank takes a break from the desk to bring you to the lab in order to demonstrate some important points about the practical side of chemistry - experimentation in the laboratory. You'll learn what to wear in the lab, how to dispose of...
TED Talks
John Hodgman: Design, explained.
Resident expert John Hodgman "explains" the design of three iconic modern objects. Or does he. (From The Design Studio session at TED2012, guest-curated by Chee Pearlman and David Rockwell.)
SciShow
3 Myths About Astronaut Food
Scientists have come up with some really creative ways to keep astronauts well fed in space for days and months at a time. But you should take some stories about space food with a grain of salt.
Crash Course Kids
Climate Change
How does climate change? And what happens to environments and ecosystems when it does? In this episode of Crash Course Kids, Sabrina shows us the effects that climate change can have and how one small change in an ecosystem can throw...