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Chapter 9 of 10All chapters

Chapter 9 of 10

Human evolution

A bush, not a ladder.

The record

Several hominin species coexisted at various times, and our lineage is a branching bush rather than a single march of progress. Neanderthals and Denisovans left DNA in living people.

  • Bipedalism came long before large brains.
  • Race is not a biological division: variation within groups exceeds that between them.

Still going

Human evolution has not stopped. Lactose tolerance, altitude adaptation and malaria resistance all spread within the last ten thousand years.