Richard Leakey, the world-renowned paleoanthropologist-turned-conservationist, has died at 77. The death of the native Kenyan was announced late Sunday by Kenyan President Uhuru Kenyatta. A cause of death was not given. Leakey, whose famous parents, Louis and Mary Leakey, made profound contributions to the understanding of human evolution through key fossil finds of early hominids, also made important discoveries of his own in the field. In 1981, he gained public notoriety as the presenter in a BBC television series called The Making of Mankind. By the late 1980s, however, he had shifted his focus, stepping in as head of the...