PALEOANTHROPOLOGY:
Oldest Human DNA Reveals Aussie Oddity
Constance Holden
Australian scientists say they have successfully extracted an extinct genetic sequence from an anatomically modern man who died on the shores of an Australian lake about 60,000 years ago. The sequence is so primitive that it raises questions about the leading model of human origins, the "Out of Africa" theory, which holds that our ancestors first arose in Africa, then spread throughout the world perhaps 100,000 years ago.