From a map diagram in Guns, Germs and Steel by Jared Diamond, origin of humans in Africa: 7 million BC, migration to southern Eurasia: 1 million BC, Europe, 500,000 BC, Australia: 40,000 BC, New Guinea: 33,000 BC, northern Asia: 20,000 BC, northern North America: 12,000 BC, the rest of North America: 11,000 BC, South America: 10,000 BC, Greenland: 2000 BC, Polynesian islands: 1200 BC, Hawaii: AD 500, New Zealand: AD 1000.