Be Smart
Why Do We Have to Sleep
Why do we sleep? We spend a third of our lives in slumber, but science has yet to determine exactly why we have do it. Here's a look at how sleep works, why we're not getting enough sleep, what happens if you DON'T sleep, and an idea...
SciShow
Why Do Men Have Nipples?
If men can't nurse, then why do they have nipples? The answer has less to do with evolution and more to do with your personal development as a teeny tiny embryo. Short version: We're all girls -- at least at first. Hank explains!
SciShow
Thrusters That Eat Teflon! Pulsed Plasma Thrusters
Pulsed plasma thrusters use the same stuff that’s on your frying pan to make spacecraft zoom around the universe. And they’ve been doing it since the 1960s.
TED Talks
Andrew Marantz: Inside the bizarre world of internet trolls and propagandists
Journalist Andrew Marantz spent three years embedded in the world of internet trolls and social media propagandists, seeking out the people who are propelling fringe talking points into the heart of conversation online and trying to...
PBS
Topology Riddles | Infinite Series
Can you turn your pants inside out without taking your feet off the ground?
PBS
How Big are All Infinities Combined? (Cantor's Paradox)
Infinities come in different sizes. There's a whole tower of progressively larger "sizes of infinity". So what's the right way to describe the size of the whole tower?
PBS
Telescopes on the Moon
Find out about China's current telescope on the moon and what the future plans are for mounting larger telescopes on the lunar surface.
SciShow
Studying Polar Bears from a Monster Truck | SciShow Talk Show
BJ Kirschhoffer from Polar Bears International discusses polar bear behavior and Jessi from Animal Wonders brings on an animal that lives near polar bears, an arctic fox!
SciShow
Weird Places The Bay of Fundy
SciShow takes you on a tour of Canada’s Bay of Fundy, home of the largest tidal range in the world.
MinutePhysics
How Entropy Powers The Earth (Big Picture Ep. 4/5)
This video is about how we don't just need energy to power our lives, we need *low entropy* energy! Thanks to Google Making and Science for supporting this series, and to Sean Carroll for collaborating on it! This video is about how we...
PBS
When Fish Wore Armor
420 million years ago, some fish were more medieval. They wore armor, sometimes made of big plates, and sometimes made of interlocking scales. But that armor may actually have served a totally different purpose, one that many animals...
MinutePhysics
Do Photons Cast Shadows?
This video is about two-photon (gamma-gamma) physics, and how photons can interact with each other - either mediated by a passing lepton, or gravitationally via lensing, or via vacuum fluctuation pair production of vertical particles...
PBS
Is the Universe a Computer?
The universe is made up of information, similar to a computer, and physics (you know, the basis of the universe) certainly is based on computational principles. But is it running some grand program? Will the answer be 42? Make sure you...
MinuteEarth
We're Oversalting Our Food, And It's Not What You Think
Want to learn more about the topic in this week's video? Here are some keywords/phrases to get your googling started: soil salinity - when soils have high salt levels that have adverse effects on plants
PBS
The Black Hole Information Paradox
Black holes are the result of absolute gravitational collapse of a massive body: a point of hypothetical infinite density surrounded by an event horizon. At that horizon time is frozen and the fabric of space itself cascades inwards at...
SciShow
SciShow Talk Show: Crash Course Physics Host Dr. Shini Somara & Sydney the Brush-Tailed Bettong
Dr. Shini Somara joins us on the Talk Show today to talk Crash Course Physics and her background in fluid dynamics and television. Then Jessi from Animal Wonders brings on Sydney, their Brush-tailed Bettong.
TED Talks
TED: Filming democracy in Ghana | Jarreth Merz
Jarreth Merz, a Swiss-Ghanaian filmmaker, came to Ghana in 2008 to film the national elections. What he saw there taught him new lessons about democracy -- and about himself.
PBS
What Do Stars Sound Like?
We can now map the interiors of stars by "listening" to their harmonies as they vibrate with seismic waves.
TED-Ed
TED-Ed: Earth's mysterious red glow, explained | Zoe Pierrat
In 2009, a satellite circled Earth, scanning and sorting the wavelengths reflecting off the planet's surface. Researchers noticed something baffling: an unexpected wavelength of unknown origin. They tried looking at Earth with only this...
SciShow
3D Printing and the Northern Walking Stick Insect: SciShow Talk Show #18
Today on the SciShow Talk Show, Ben Malouf shows off some of his 3D printed designs and talks with Hank about how he got into the world of 3D printing. Then Jessi from Animal Wonders joins in to share Holmes and Watson, the northern...
Crash Course
The Silent Era: Crash Course Film History
The Silent Era of Hollywood set a lot of things into motion in terms of how movies were made and sold. Big stars were one of the main ways studios tried to make their movies stand apart from one another and get the public to make choices...
TED Talks
Lee Mokobe: A powerful poem about what it feels like to be transgender
"I was the mystery of an anatomy, a question asked but not answered," says poet Lee Mokobe, a TED Fellow, in this gripping and poetic exploration of identity and transition. It's a thoughtful reflection on bodies, and the meanings poured...
TED Talks
Michelle Kuo: The healing power of reading
Reading and writing can be acts of courage that bring us closer to others and ourselves. Author Michelle Kuo shares how teaching reading skills to her students in the Mississippi Delta revealed the bridging power of the written word --...
TED Talks
TED: How storytelling helps parents in prison stay connected to their kids | Alan Crickmore
When a parent is sent to prison, the unintended victims of their crimes are their own children -- without stability and support, kids are at higher risk for mental health and development issues. In a heartfelt talk, Alan Crickmore...