The man considered the greatest boxer of all time inspired millions by standing up for his principles during the 1960s, and by always entertaining — in the boxing ring and in front of a microphone.
Boxer Muhammad Ali weighs in before his heavyweight bout with Jerry Quarry on Oct. 20, 1970, in Atlanta.
AP
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Zoo visitors look at protesters and mourners from a walk bridge during a vigil for the gorilla Harambe outside the Cincinnati Zoo & Botanical Garden.
John Minchillo/AP
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Scientists in California are turning to big data to help save the red-legged frog, which is listed as threatened under the Endangered Species Act.
Gary Kittleson
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Olga Bell's latest album, Tempo, is a move away from her classical roots — and towards electronic dance music.
Nicholas Prakas/Courtesy of the artist
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Pope Francis hugs Sister Carmen Sammut, a missionary sister of Our Lady of Africa, at the Vatican on May 12. The pope said he was willing to create a commission to study whether women can be deacons in the Catholic Church, signaling an openness to letting women serve in ordained ministry currently reserved to men.
AP
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An attendee hands a U.S. $2 bill to Donald Trump during a town hall event in Gaffney, S.C., on Feb. 18.
Luke Sharrett/Bloomberg via Getty Images
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Morehouse College freshmen Philip Rucker, Damon Redding and Tyree Stevenson use a programming language called Python to plot a map of weather stations in the United States.
Tasnim Shamma/WABE
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