World's Fastest Running Robot of the Day

DARPA's speedy Cheetah robot has set a new landspeed record for robots with legs, reaching speeds of 18 miles an hour. The 'bot topped the previous record of 13.1 MPH, set way back in 1989.

Although it still lags behind the fastest human runners -- topped by Usain Bolt and his amazing 28 mph world record -- the Cheetah's creators at Boston Dynamics h