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The human lineage diverged from chimpanzees approximately 6–7 million years ago in Africa. Key milestones include: Australopithecus afarensis (Lucy, 3.2 million years ago) walking upright; Homo habilis using stone tools (2.4 million years ago); Homo erectus leaving Africa (1.8 million years ago); Homo sapiens emerging in Africa (300,000 years ago) and leaving 60,000–70,000 years ago to colonize the world.
Modern humans interbred with Neanderthals (1–4% DNA in non-African people) and the mysterious Denisovans (3–5% DNA in some Asian populations). The development of language (estimated 70,000–100,000 years ago), art (Chauvet Cave, 36,000 years ago), and agriculture (10,000 years ago) produced the cognitive revolution that created civilization.
# Top 10 Human Evolution facts
- 1Homo sapiens left Africa only 60,000–70,000 years ago — all non-African people descend from that single migration
- 2Modern humans carry 1–4% Neanderthal DNA — evidence of ancient interbreeding before Neanderthals disappeared
- 3The human brain tripled in size over 3 million years of evolution — for reasons scientists still debate
Fascinating Facts
- ◆Homo sapiens left Africa only 60,000–70,000 years ago — all non-African people descend from that single migration
- ◆Modern humans carry 1–4% Neanderthal DNA — evidence of ancient interbreeding before Neanderthals disappeared
- ◆The human brain tripled in size over 3 million years of evolution — for reasons scientists still debate
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