Stephen Hawking to turn 70, defying disease

First Posted: 1/5/2012

FILE In this June 19, 2006 file photo Astrophysicist Stephen Hawking speaks at an international gathering of scientists on the origins of the universe at Beijing's Great Hall of the People in China. British scientist Stephen Hawking has decoded some of the most puzzling mysteries of the universe but he has left one mystery for others to explain: How he managed to survive so long with such a crippling disease. The physicist and cosmologist was diagnosed with Lou Gehrig's disease, or motor neuron disease, when he was a 21-year-old student at Cambridge University. Most people die within a few years of the disease being identified. On Sunday, Hawking will turn 70.(AP Photo/Elizabeth Dalziel-File)