(CNN) – How's this for a free-fall: Austrian daredevil Felix Baumgartner is planning to jump from a balloon, 23 miles up. That would shatter a nearly 50 year world record. This guy is no stranger to stunts and if he makes the jump, he'd break the sound barrier, falling at 690 miles per hour. So … Continue reading Daredevil wants to jump from 23 miles