Editor's Note: Renowned theoretical physicist Stephen Hawking died on March 14, 2018, at age 76. This story, originally published on his 70th birthday on January 7, 2012, is being resurfaced to explain how he beat the odds and lived so long with the disease amyotrophic lateral sclerosis (ALS).
Stephen Hawking turns 70 on Sunday, beating the odds of a daunting diagnosis by nearly half a century.
The famous theoretical physicist has helped to bring his ideas about black holes and quantum gravity to a broad public audience. For much of his time in the public eye, though, he has been confined to a wheelchair by a form of the motor-neuron disease amyotrophic lateral sclerosis (ALS). And since 1985 he has had to speak through his trademark computer system—which he operates with his cheek—and have around-the-clock care.
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