The books “Ribbons of Rust” and “John & Paul” show how the circumstances of time, place, talent, technology and friendship helped the Beatles find success.

Fossilized poop from 236 million years ago may contain the oldest-known butterfly evidence ever found. A prehistoric clue, ...

Gastroenterologist Dr. Trisha Pasricha has some tips for whether to poop on company time (yes), whether to wait (no) and how to relax while on the job.