How? Amyotrophic Lateral Sclerosis When? Late sixties. The disease progresses slowly. He was diagnosed in 1963. By '74, he could not get out of bed or feed himself. Source: http://en.wikipedia.org/wiki/Stephen_hawking. read more
Stephen Hawking is brilliant man probably the smartest in theworld. He has done amazing things such as he has a Ph.D. inphysics. and Dr. Hawking has researched black holes. read more