In some households, cracking your knuckles is a declaration of war. Whether you’re in the camp that can’t stand the sound or the one that can’t see what the fuss is about, you might be surprised to ...

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

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 ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment.View full profile Rachael has a degree in Zoology ...

Good morning. I'm Noel King with the answer to a mystery that has puzzled scientists and kids for years. When we crack our knuckles, why do they make that popping sound? A grad student in France, ...

I’ve got my fair share of unconscious habits: running my hands through my hair, tapping my feet, pursing my lips when I’m concentrating—and, of course, cracking my knuckles. That last one is perhaps ...

Knuckle cracking is very common. Many people do it everyday instinctively, but never figure out why or what causes the popping sound. There have been debates about what the sound of knuckle cracking ...

Is knuckle cracking harmless? According to Dr David Abbasi, occasional pops are fine, but frequent forceful cracking can ...

A graduate student in France is the latest to investigate why cracking knuckles make that noise. His answer involved a series of math equations. Good morning. I'm Noel King with the answer to a ...

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 ...