SACRAMENTO, Calif. — Snap, crackle, pop. If you're a knuckle cracker, that familiar sound when you consciously pop your joints is like comfort food. You know it might not be so healthy for your hands ...

When someone stretches or bends their knuckle to crack it, they increase the space between the bones, which creates a drop in ...

What do you get when you combine the "Wayne Gretzky of knuckle cracking" with a magnetic resonance imaging (MRI) machine? The answer to a very old question, it turns out. By using MRI to video-record ...

It’s one of the most annoying habits, but it's also pretty mysterious. What actually causes the sound of cracking knuckles? Researchers long believed the sound was caused by the collapse of bubbles ...

There aren’t any awards to be won for solving science’s minor mysteries—why yawning is contagious, why puppies make us melt—but that doesn’t mean we don’t want the answers anyway. Add to those ...