Tracing humanity's African ancestry may mean rewriting “out of Africa” dates. Does survival of the sexiest explain civilization? Benjamin Phelan on the most spectacular mutation in recent human history: How did milk help found Western civilization? Unnatural selection: Salamanders, fish and perhaps even humans are evolving fast in response to toxic chemicals — is that bad? State of the species: Does success spell doom for Homo sapiens? Charles C. Mann wonders. Brandon Kein on how human evolution is entering an exciting new phase. Colin Farrelly on the duty to extend the “biological warranty period” (in 5 parts). The recipe for immortality: An expert in synthetic biology explains how people could soon live for centuries. Max More on superlongevity without overpopulation. Marios Kyriazis on the global brain and its role in human immortality. Gattaca alert: Should we welcome the new age of eugenics? The origin of intelligence and mental illness are linked to ancient genetic accident. David Pearce on humans and intelligent machines co-evolution: fusion or replacement? Dawn Morrow and J.F. Sargent on 5 weird directions human evolution could have taken.

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