It's a Slime Mold's World, We're Just Living In It

It seems we're always learning something new about slime molds, the bizarre roaming cell-colonies where countless biological principles can be found writ in miniature. Here's a point-by-point breakdown of why the slime mold deserves your respect. » 3/13/10 11:00am 3/13/10 11:00am

X-Shaped Faux-Comet Likely Related to Prehistoric Dinosaur-Smasher

P/2010 A2, the mysterious object streaking through the solar system, appears to belong to the same family of asteroids that sent a huge rock our way 65 million years ago. Maybe it's trying to see whether Tyrannosaurs have re-evolved? » 2/07/10 3:00pm 2/07/10 3:00pm