Scratch-off tickets are big money for state-run lotteries. Is it the promise of winning big that keeps players in the game? Or is there something else happening in the brain? NOVA is available to ...

Ah, cats. We love our furry feline overlords despite the occasional hairball and their propensity to scratch the furniture to sharpen their claws. The latter is perfectly natural kitty behavior, but ...

If you have a cat, you’ve probably endured your fair share of unwanted furniture scratching. Maybe you’ve purchased scratching posts, rearranged your furniture, or played with your cats before bed, to ...