World-class sprinters just keep getting faster, with some running over 40 kilometers per hour! That kind of makes you wonder… how much faster can humans get?

Arms and legs are pretty similar, from the amount of bones they have to the way their joints bend, but your legs have one thing your arms don't: kneecaps. Ever wonder why?

You’ve seen caterpillars, and you’ve seen butterflies. But do you know how a caterpillar becomes a butterfly? Jessi explains the wonder of metamorphosis!

A 2.4-mile swim, a 112-mile bicycle ride and then a full-length marathon on hot, dry ground -- with no breaks in between: the legendary Ironman triathlon in Kona, Hawaii, is a bucket list goal for champion athletes. But when Minda...

So maybe we can't outrun cheetahs or antelope, but humans are uniquely adapted for long distance running. What does science have to say about marathon running? To find out, (and because I was feeling a little crazy) I decided to run one!...

Did you know that when you’re soaring on the swings, or sliding down the slide, you’re taking part in some seriously cool science? Jessi explains the forces you can find at the playground!

Learn how to build a pillow fort with the help of the force called compression. Just save some room for us!

Craft along with Jessi and Squeaks to make your own insect art!

Our image of dinosaurs has been constantly changing since naturalists started studying them about 350 years ago. Taken together, these pictures can tell us a whole lot about just how much we have learned. Let's explore the history of...

By studying the movement and bodies of insects such as ants, Sarah Bergbreiter and her team build incredibly robust, super teeny, mechanical versions of creepy crawlies … and then they add rockets. See their jaw-dropping developments in...

Find out why these arachnids are among the least B of humanity's BFFs. Yeah, they're blood-sucking parasites, but that's not all of it!

In this TED archive video from 1998, paralympic sprinter Aimee Mullins talks about her record-setting career as a runner, and about the amazing carbon-fiber prosthetic legs (then a prototype) that helped her cross the finish line.

We ranked dragons based on how biologically and evolutionarily plausible they are.

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To learn more, start your googling with these
keywords:
Tetrapods:...

The point of fiction is to cast a spell, a momentary illusion that you are living in the world of the story. But as a writer, how do you suck your readers into your stories in this way? Nalo Hopkinson shares some tips for how to use...

Until the early 20th century, Tasmania was home to a very weird wolf-like creature. Except that it wasn't a wolf. Even though it looked like a wolf. How did that happen? Here's the science of convergent evolution!

There are all sorts of flying birds, but some of the world's biggest are ones that stick to the ground, like the awesome ostrich!

There are more insects in the world than any other kind of animal! In this episode of SciShow Kids, Jessi and Squeaks show you how to identify an insect, in three easy steps!

A SciShow Kids viewer wants to know more about spiders so she’s not afraid of them anymore. And know what? They’re not scary! They’re awesome!

New Review“Animal Moves” compares the movements of animals in nature to everyday objects and actions in the human world.

New ReviewLearn fun and easy jumping skills for kindergarten! This video teaches kids how to jump higher and farther using big arm swings, bent knees, and safe landings, with playful stations like hoops, rivers, hurdles, and catching a ball....

During the Chechen wars Dr Khassan Baiev saved the lives of thousands of men, women and children. For his work he was sentenced to death by the Russian and the Chechen rebels and fled to live in the USA. After the war, he returned to...

Caecilians are legless amphibians. Some of them are immune to cobra venom and in a certain sense, some of them eat their mothers from the inside-out and some eat them from the outside-in.

Sea spiders are not actually arachnids, although they certainly look the part. They’re weird guys, and the specifics of their strangeness may actually help us to better understand how all invertebrate groups evolved.<br/>

97 Funniest Jokes