This is what I get for surfing at four a.m. apparently: A really nice, long, juicy article about why we sleep! It tackles some new research and proposes a sort-of-new conclusion, too. Good read! It's always nice to be reminded why sleep is important, as I think keeping this in mind can only help our efforts to do it more efficiently.
And science wins (at least) twice today! Check out this amazing picture of a detail of the Helix Nebula:
…There's why we call them "The Heavens", eh? ;)