Stephen Hawking, universally beloved scientist and one of the greatest minds of our generation, has died at age 76.

The theoretical physicist, best known for his work in cosmology (particularly with black holes), was both a visionary and an inspiration. Outside his vast intelligence (of which he was very modest, once saying that people who boasted about IQs were losers), he was also a study in resilience and perseverance.

At the age of 21, Hawking was diagnosed with amyotrophic lateral sclerosis (ALS). The disease progresses quickly, and Hawking was given only a short time to live, but he survived for decades and stayed mobile with use of a wheelchair.

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Heroes

History is full of women who bravely fought to make a difference in the world.

As activists, journalists, or fighters, women have stepped up to combat social injustice and defend their freedoms. Others worked their way into “boys clubs,” helping to pave the way for others to follow.

A Woman Suffrage Party parade through New York in 1915.  Image by Paul Thompson/Topical Press Agency/Getty Images.

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