http://www.foxnews.com/science/2012/10/06/before-baumgartner-8-craziest-skydives-all-time/

On Tuesday (Oct. 9), Austrian skydiver Felix Baumgartner will
attempt his wildest stunt yet: becoming the first human to break the speed of
sound in freefall in what would also be the highest skydive yet, from 23 miles
(37 kilometers) in the air.

Thanks to Fred Wilson.