Osteoarthritis is usually framed as the price of just getting older. Many people imagine a knee that slowly wears down, then never recovers. That picture is familiar, yet it is too simple.

Six-time USA Memory champion Nelson Dellis has memorized hundreds of digits of pi. He has tips for how to improve your memory.

Does Lucy actually remember Henry in 50 First Dates? Here is what the boat ending, marriage reveal, and bittersweet final scene mean ...