Scientists say morality grew out of biology, not philosophy
By NICHOLAS WADE The New York Times
Some animals are surprisingly sensitive to the plight of others. Chimpanzees, who cannot swim, have drowned in zoo moats trying to save others. Given the chance to get food by pulling a chain that would also deliver an electric shock to a companion, rhesus monkeys will starve themselves for several days.
Biologists argue that these and other social behaviors are the precursors of human morality. They further believe that if morality grew out of behavioural rules shaped by evolution, it is for biologists, not philosophers or theologians, to say what these rules are.
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