The recent meteor strike over Chelyabinsk, Russia is reminding all of us just how vulnerable we are to attacks from above. So I reached out to Phil Plait, who writes the Bad Astronomy column at Slate magazine. Because who better to talk to about asteroids than the author of a book called "Death From The Skies!"?
To learn more, see the video above or click the link below to read the full transcript. And don't forget to comment at the bottom of the page. Come on, talk nerdy to me!