MOUNTAIN VIEW, CALIFORNIA—Google celebrates what would have been Mary Leakey’s 100^th birthday today with a Google Doodle. She is credited with the discovery of Proconsul africanus in 1948; Zinjanthropus boise, now known as Australopithecus boisei, in 1959; and human ancestor Homo habilis in 1960. She also uncovered the 3.6 million-year-old Laetoli Footprints, which show an early human walking upright, in Tanzania’s Olduvai Gorge. Mary Leakey died in 1996 at the age of 83.