Sunita Williams will run Boston marathon, in space!

Williams is registered for next month's Boston Marathon, even though she'll be stuck on the international space station when the rest of the field lines up for the 111th edition of the race. So the U.S. Navy commander will run the equivalent distance on a treadmill -- 210 miles above Earth, and tethered to her track by bungee cords so she doesn't float away.

-- Read the rest of the article