The Greatest: Muhammad Ali through the years.
LAS VEGAS, : Former heavyweight boxing champion Mike Tyson (L) speaks with boxing legend Muhammad Ali, 22 February, at the University of Nevada, Las Vegas (UNLV) student union ballroom. During the evening's program, which kicked-off Black History Month, Ali was honored for the contributions he made to the African-American community. The appearance was arranged by Ali's daughter, Maryum Ali, who attends UNLV, and the Black Student Association at UNLV. AFP PHOTO John GURZINSKI (Photo credit should read JOHN GURZINSKI/AFP/Getty Images)