The sweet release of cracking knuckles has always baffled scientists. Over the years, scientists trying to explain the cracking sound have pointed to “bubbles” created by rapid pressure changes in the ...

Professor Alain Goriely might not be Calamity Jane riding the Deadwood Stage but he could just be one of the first people to truly understand what makes a "whip crack-away". As a staple element of ...

CHICAGO (CBS)-- Chicagoans have been startled by loud booms and cracking sounds, and they're not sure where the noise is coming from. One possibility is a phenomenon called "frost-quake," which ...