Early modern humans evolved primarily in East Africa 200,000 years ago. Cro-Magnon resembled modern Europeans and towered 4-12 inches over Neanderthals. Modern humans expanded to Southwest Asia by 100,000 years ago but nowhere else until 60,000 years ago. Replacement model claims African Homo sapiens replaced all Eurasian archaics 60,000-40,000 years ago. Regional continuity model holds modern humans evolved simultaneously from local archaics across Old World. East Asians inherited shovel-shaped incisors directly from Homo erectus. Europeans retain Neanderthal-like heavy brow ridges and high nose angles. Assimilation model states African moderns interbred limitedly with Eurasian archaics forming hybrids. Romanian Oase skeleton mixes modern and archaic traits from Neanderthal interbreeding. Non-Africans carry Neanderthal and Denisovan genes especially Southern Chinese and New Guineans. Archaic humans survived in West Africa until at least 13,000 years ago. Australian Aborigines arrived by boat 60,000 years ago sharing traits with Indonesian archaics. Humans triggered mass extinctions of megafauna worldwide via hunting. Human evolution accelerated post-Ice Age from population growth and new selection pressures like diseases and diet.