An Austrian daredevil named Felix Baumgartner plans to break the world record for highest skydive in August.
After taking an air balloon to 120,000 feet, he'll step out of his helium cocoon at the edge of space and break the sound barrier on his way back to earth.
Sound exciting? It's already been done. Mental Floss has compiled a list of 11 amazing daredevils who have pulled off impossible stunts.
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