Muhammad Ali, born Cassius Clay on Jan. 17, 1942, is regarded as one of the top professional boxers of all time. He was an activist who spent his life fighting for and enacting change.

The making of a champion: Ali’s early years American Heavyweight boxer, Cassius Clay (later Muhammad Ali, 1942 – 2016), making a fist as he lies on his hotel bed, London, 27th May 1963.

OP-ED: In honor of his 83rd birthday, Lonnie Ali — Muhammad Ali’s widow — shares a groundbreaking study revealing the trends that shape compassion in America.

Ali quickly ingratiated himself with the media with his boastful claims and fresh, stylish way of speaking. He told Sports Illustrated in 1961: "Most of them [other boxers] … can fight almost as ...

Foreman attended Ali's memorial and funeral service when Ali died in 2016. But the relationship got off to a rocky start in 1974 leading up to "The Rumble in the Jungle,'' their fight in Zaire.

EXCLUSIVE: ALI, a musical about civil rights leader and world heavyweight boxing champion Muhammad Ali, who became a pivotal historical figure of the 20th century, transcending his sporting ...

Muhammad Ali, left, Liberace and Hulk Hogan pose for photos ahead of Wrestlemania I on March 29, 1985, at Madison Square Garden. Ali is being inducted into the WWE Hall of Fame later this year.