While the brain isn't technically a muscle, science shows it still needs regular workouts to stay sharp. One great way to keep it active? Challenging it with riddles that push you to think ...

The 'Project Hail Mary' addressed his football shortcomings with Jason and Travis Kelce.

I watch Rufus, a friend’s dog, chew enthusiastically on a rubber bone. I know the dog is alive, and his toy is not. I know that intuitively. But can I prove it scientifically? Can science parse the ...