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 ...

Cracking knuckles has long been the subject of myths and misconceptions, particularly the belief that it causes arthritis ...

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 ...

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 ...