Knuckles started out as your typical Treeing Walker Coonhound, using that brilliant sniffer of his to sniff out raccoons. The only problem is, Knuckles didn’t want to hunt them. He wanted to use them ...

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, ...