From late-night chores to relationship talks, Americans take 40 minutes to fall asleep. A new survey uncovers what’s behind our nationwide bedtime delay.

New study uncovers how cellular aging spreads through tissues, and how blocking a single protein might slow the process.

For myself, as a philosopher of love, there is no good reason to say that loving relationships of a mostly remote nature cannot endure – or that physical separation inevitably and eventually destroys ...