Archaeology isn't exactly easy, so it's pretty impressive how often we can figure things out about people that aren't around anymore. But that's not always possible, and some mysteries leave archaeologists puzzled for centuries. From...

Real World Telekinesis (feat. Neil Turok)

What is a sport? Do arbitrary and technophobic rules matter?

In this SciShow Kids compilation, Jessi and Squeaks revisit some of their favorite winter activities and learn a little science along the way.

A mathematician with a knife and ball begins slicing and distributing the ball into an infinite number of boxes. She then recombines the parts into five precise sections. Moving and rotating these sections around, she recombines them to...

How do Newton's Cradles connect to cancer treatments? Let's unpack the physics of some of our favorite desk toys, from dippy birds to perpetual motion machines, and explore how these scientific principles can be used beyond an office desk.

Get to know plasma, the most common, but probably least understood, phase of matter in the universe!

The universe is going to end. But of all the possible ends of the universe vacuum decay would have to be the most thorough - because it could totally rewrite the laws of physics. Today I hope to help you understand exactly how terrified...

What is inside a black hole? Inevitable crushing doom? Gateways to other universes? Weird, multidimensional libraries? If you’ve ever wanted to know then you might be in luck - Some physicists have argued that you’re inside one right now.

What shape is the event horizon of a black hole? Well, the answer to that question changes if our universe is hiding an extra dimension (or more). Black holes could come in an infinite number of shapes — including a precisely spinning...

You'd think that the Northern and Southern Hemispheres would be basically symmetrical -- that since our planet is a ball, the climate, temperature, and weather patterns would be the same on top as on the bottom. But there are some...

With an effective surface temperature of roughly 5,500 degrees Celsius, you might think water couldn't survive on the Sun. Well, scientists debated whether or not it was there for nearly a century, and it turns out, it can!

This video is about how physics dictates the design of modern windmills - why they are so big, have so few blades, and have such skinny blades.

This video covers the General theory of Relativity, developed by Albert Einstein, from basic simple levels (it's gravity, curved space) through to the concepts of how curved spacetime is represented by psuedo-Riemannian manifolds with...

Does your toilet water drain differently than in the other hemisphere? Is it because of the Coriolis effect? Hank has some things to clarify about these questions, and more in this edition of I Don't Think It Means What You Think It Means.

Hank takes us on a journey to center of the Earth to explain both how the solid core formed and why it is so important for life as we know it.

In 1965, MIT's Lincoln Laboratory saw their Lincoln Calibration Sphere 1 (LCS-1) launched into Earth orbit. It was an empty aluminum sphere and couldn't do any science of its own. But the world's most boring disco ball has played a huge...

There are still several fascinating mysteries of our universe unsolved by scientists even after decades and even centuries of research! Join Olivia Gordon for a new episode of SciShow and learn about these seven weird phenomena that...

The size, shape, and designs of the balls used in sports are usually the results of decades or even centuries of trial and error, and the cute, dimply li'l golf ball is no different!

You might have a friend who is “double-jointed" and can bend their fingers in freaky ways. Why are they are so flexible?

Living in space is pretty different from living on Earth, and not just because people can float around! Today, Jessi and Sam the Bat learn about the weird ways things like fire and water behave when they are in space.

Briana Scurry, former goalkeeper for the U.S. Women's National Soccer Team, discusses her experience with a career-ending concussion and her efforts to raise awareness of the concussions.

In which John Green, Hank Green, and Emily Graslie teach you about, well, everything. Big History is the history of everything. We're going to start with the Big Bang, take you right through all of history (recorded and otherwise), and...

Imagine you have a square-shaped room, and inside there is an assassin and a target. And suppose that any shot that the assassin takes can ricochet off the walls of the room, just like a ball on a billiard table. Is it possible to...