By any measure, Stephen Hawking is one of the most famous and influential figures in modern science. For thirty years, he served as Lucasian Professor of Mathematics at the University of Cambridge, and his career before and after his decades in that post is the stuff of scientific legend. He is also probably the longest-living person ever to be diagnosed with amyotrophic lateral sclerosis [ALS], and the very fact that he has been productive since that diagnosis at age 21 is a testimony to his sense of personal mission and sheer determination.

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