Our sleep cycle, or circadian rhythm, is based on the body's reaction to the daily rise and setting of the sun, producing more of the sleep-encouraging hormone melatonin in the dark hours and less after dawn.
TODAY IN SLATE
False rape accusations exist, and they are a serious problem.
Scotland Is Just the Beginning. Expect More Political Earthquakes in Europe.
I Bought the Huge iPhone. I’m Already Thinking of Returning It.
The Music Industry Is Ignoring Some of the Best Black Women Singing R&B
How Will You Carry Around Your Huge New iPhone? Apple Pants!
The Most Terrifying Thing About Ebola
The disease threatens humanity by preying on humanity.
The Other Huxtable Effect
Thirty years ago, The Cosby Show gave us one of TV’s great feminists.