Iran and Israel: two nations with tense relations that seem existentially at odds. But for all their antagonistic rhetoric, there is a recent hidden history of collaboration, even friendship. In an informative talk, Trita Parsi shows how...

Sharing the results of a massive, worldwide study, geneticist Svante Pääbo shows the DNA proof that early humans mated with Neanderthals after we moved out of Africa. (Yes, many of us have Neanderthal DNA.) He also shows how a tiny bone...

A quick explanation of e^(pi i) in terms of motion and differential equations

Problem 2 from the 2011 IMO

Do 97% of climate scientists really agree that humans are the main cause of climate change? Yep! Here's what the 97 percent statistic *really* means.

Recent proof-of-concept studies showed that researchers were able to survey animals in an area simply by vacuuming up DNA in the air.

Problem 2 from the 2011 IMO

After a massive storm tears through the Hex Archipelago, you find five grizzled survivors in the water. As an act of gratitude for saving them, they reveal a secret _ the island they were just on holds some buried treasure. But when the...

What's the best sleeping position? Well, with all the pseudoscience to consider, it might just depend on who you are. *The graphic shows the stomach on the wrong side of the body. It should be pictured on the left side of the body, not...

Inventor Nick Sears demos the first generation of the Orb, a rotating persistence-of-vision display that creates glowing 3D images. A short, cool tale of invention.

Is teleportation possible? Could a baseball transform into something like a radio wave, travel through buildings, bounce around corners, and change back into a baseball? Oddly enough, thanks to quantum mechanics, the answer might...

Suppose you placed a camera at a fixed position, took a picture of the sky at the same time every day for an entire year, and overlaid all of the photos on top of each other. What would the sun look like in that combined image? A...

Showing a series of inspiring, unusual and playful products, British branding and design guru Paul Bennett explains that design doesn't have to be about grand gestures, but can solve small, universal and overlooked problems.

This is episode 1 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hedge, as they attempt to save the world. The two embark on a quest to collect three artifacts and...

In his lab at Penn, Vijay Kumar and his team build flying quadrotors, small, agile robots that swarm, sense each other, and form ad hoc teams -- for construction, surveying disasters and far more.

In which John Green teaches you about the Holy Roman Empire by teaching you about Charles V. Charles Hapsburg was the holy Roman Emperor, but he was also the King of Spain. And the King of Germany. And the King of Italy and the Lord of...

Everybody poops ... but is it possible that you're pooping all wrong? Learn the science behind the greatest debate of our time: squat vs. sit!

Scientists have thought for awhile that pulsars could be used as a sort of galactic positioning system, and astronomers have published the most advanced topographical map of Titan to date!

This is episode 4 of our animated series "Think Like A Coder." This 10-episode narrative follows a girl, Ethic, and her robot companion, Hedge, as they attempt to save the world. The two embark on a quest to collect three artifacts and...

Our laws of physics are equations of motion, along with some associated constants. We've talked about the symmetries of these equations, and how they lead us to conserved quantities. But this is just the tip of the theoretical iceberg -...

This week, an update on Dawn's rendezvous with Ceres, a changing of the guard on the ISS, and a viewer's guide to this year's solar eclipse!

In this episode of the SciShow talk show, Michael and Hank discuss human posture and evolution and Hank shares some personal information, and then Jessi from Animal Wonders shares Leonard, the legless lizard.

How high can you count on your fingers? It seems like a question with an obvious answer. After all, most of us have ten fingers -- or to be more precise, eight fingers and two thumbs. This gives us a total of ten digits on our two hands,...

Have you ever been sitting down for a long time and had your legs fall asleep? It feels really weird and can make it hard to walk for a little while! So what makes your legs fall asleep, and why does it feel all prickly when they start...