29 Aug 1960, Washington, DC, USA — Paleoanthropologist Louis Leakey takes measurements of a 600,000 year old hominid skull found in the Olduvai Gorge in Tanzania. — Image by © Bettmann/CORBIS
29 Aug 1960, Washington, DC, USA — Paleoanthropologist Louis Leakey takes measurements of a 600,000 year old hominid skull found in the Olduvai Gorge in Tanzania. — Image by © Bettmann/CORBIS