The Great Ones: Beyond Their Limits

Meet 10 great explorers, athletes and other notables who pushed to go past their limits to achieve greatness.

April 26, 2013
8:20 AM EDT
Daniel Dias appears with Brazilian President Dilma Rousseff. | Dilma Rousseff/Wikimedia Commons
| Corbis Images
Getty Images
Red Bull Stratos
Courtesy Williams College
Kilian Jornet Burgada (right), climbs the Grand Mont pass at 2,687 meters during the 23rd Pierra-menta ski-climbing race. | AFP/Getty Images
Stephen Hawking floats aboard a Zero Gravity Corp. parabolic flight in Florida in 2007. | Zero Gravity Corp