Did you know that in about 200 million years, Earth is due for another supercontinent? What exactly that supercontinent will look like, though, depends on a lot of geological factors, and is harder to guess at than you might think!...

A proof of the Wallis product for pi, together with some neat tricks using complex numbers to analyze circle geometry.

when the pyramids were built, the ancient Egyptians hadn't invented the wheel, developed bronze tools, or discovered pi. How were they able to stack two million stone blocks, each weighing more than two tons, into precise geometric...

In about 200 million years, Earth is due for another supercontinent. What exactly that supercontinent will look like, though, depends on a lot of geological factors, and is harder to guess at than you might think! Today, SciShow walks...

Mr. Andersen demonstrates the azide-winkler method of dissolved oxygen analysis.

How close could you get to the sun using today's spacesuits or spaceships? Find out in today's episode of SciShow Space!

Is the equinox really when day = night, or is that a myth?

With so many galaxies in the universe, some are bound to astound us. Here are three of the most extreme galaxies scientists have discovered so far.

Can you ever travel from one place to another? Ancient Greek philosopher Zeno of Elea gave a convincing argument that all motion is impossible - but where's the flaw in his logic? Colm Kelleher illustrates how to resolve Zeno's Dichotomy...

We've heard that bees are disappearing. But what is making bee colonies so vulnerable? Photographer Anand Varma raised bees in his backyard — in front of a camera — to get an up close view. This project, for National Geographic, gives a...

Howcast - If you’ve got an old floppy disk, you can create a tiny replica of the Starship Enterprise.

Howcast - Learn three basic techniques of cupcake decorating in this Howcast food video with expert Liz Sutton.

Howcast - Learn how to do warm-ups, jumping jacks, and modified push-ups for a bikini workout from personal trainer Erin Sharoni in this Howcast workout video.

Howcast - Learn how to increase your number of sit-ups by 400 percent in this US army basic training video from Howcast with Sergeant Michael Volkin.

Howcast - Learn how to do a frontside flip from professional skateboarders Bam Margera and Kerry Getz in this Howcast skateboarding video.

Howcast - Learn yoga exercises to ease wrist pain or carpal tunnel from certified yoga instructor Chelsey Korus in this Howcast video.

Howcast - Learn how to do the simple step kid-n-play style dance move from fitness expert Rachel Warren in this hip-hop dance workout video from Howcast.

Howcast - Learn how to use a noodle float for water aerobics from Dancing with the Stars performer Aubree Marchione in this Howcast water workout video.

Howcast - Learn how to do twenty-ones from personal trainer Brett Azar in this Howcast home arm workout for men video.

Howcast - Let chef Michelle Doll show you how to cut a cake tier board in this Howcast video about wedding cake decorating.

Howcast - Learn how to make a vanishing coin reappear in a sugar packet in this dinner table magic tricks video from Howcast.

Howcast - Learn how to foam roll your hamstrings in this Howcast video featuring certified NYC trainer Amanda Edell.

Howcast - Learn advanced techniques for foam rolling your adductor muscles in this Howcast video featuring certified NYC trainer Amanda Edell.

Howcast - Learn how to do the linking paper clips magic trick from Magician Roger "Rogue" Quan in this office magic tricks revealed video from Howcast.