It's tempting to think that our forebears got lots of blissful snooze time. But modern-day hunter-gatherers aren't getting more than 6.5 hours a night, researchers say. And that's without smartphones.
A new study finds that people who read print books at bedtime fall asleep easier — and sleep better — than those who use an e-reader. Also: JRR Tolkien may have survived war due to a timely illness.