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

in this video Paul Andersen shows conceptual thinking in a mini-lesson on INSERTTITLEHERE.


TERMS
Complex structures - structures that consist of many different and conne
cted parts
Microscopic structures - structures...

Some people love the feeling of cracking their knuckles, while others cringe at the sound. But what causes that trademark pop? And is it dangerous? Eleanor Nelsen gives the facts behind joint popping.

The bad backs, elbow pain, and creaky knees so common in older people often aren't just "old age." In fact, the source of this stiffness plagues many young people as well. The culprit is arthritis: a condition that affects over 90...

Human-robot hybrids are advancing quickly, but the applications aren't just for complete synthetic humans. There's a lot we can learn about ourselves in the process.

It seems like kind of an awkward way to spend most of your time, but flamingos seem perfectly happy to hang out on one leg. For a long time, people assumed they were trying to conserve heat. But thanks to some unusual research, we now...

As a young scientist, Catherine Mohr was on her dream scuba trip -- when she put her hand right down on a spiny sea urchin. While a school of sharks circled above. What happened next? More than you can possibly imagine. Settle in for...

When spiders die, their tiny legs curl up tight against their body, because spiders don’t use muscles to extend their legs. Instead, they have hydraulic legs!

We continue our look at your bones and skeletal system, skipping over the silly kid's song in favor of a more detailed look at your your axial and appendicular skeleton. This episode also talks about the structural and functional...

"The bends" is one of the biggest risks that humans have to deal with when diving, but why don't marine animals, which are diving all the time, get them?

SciShow explains what really causes those popping sounds your joints make -- fluid dynamics, people! -- and what you should watch out for if you're a habitual knuckle-popper.

Plants don’t have brains or muscles, and yet some of them can perform such feats as eating insects or following the sun. Scientists haven’t completely figured out how this happens, but they do have some pretty strong leads.

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

Why Do My Joints Crackle And Pop?

Howcast - Tradition says slice at the table, but we think your guests will just as happy with a pretty, plated presentation.

Howcast - Joint pain can be harder to describe than other pain. Here are some ways to help your doctor make an accurate diagnosis.

Howcast - Learn popping in this Howcast dance video with choreographers Jamal Cumberbatch and Searich Wilson Hong.

Howcast - Learn how to make half-lap joints from Makeville Studio in this Howcast woodworking video.

Howcast - Learn joinery basics from Makeville Studio in this Howcast woodworking video.

Howcast - Learn how to make a box joint from Makeville Studio in this Howcast woodworking video.

Howcast - Learn how to use a biscuit joiner in this Howcast woodworking video featuring Makeville Studio.

Howcast - Learn about chiropractic care for TMJ disorders from Dr. Karen Erickson in this Howcast video.

Howcast - Learn what a chiropractic adjustment is and how it's performed from Dr. Karen Erickson in this Howcast video.