Ben Oldroyd

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Prior to Hamilton’s rule, biologists puzzled over how cooperative behaviours evolved. Christian Collins/Flickr

Origins of altruism: why Hamilton still rules 50 years on

Ben Oldroyd, University of Sydney; Madeleine Beekman, University of Sydney, and Rob Brooks, UNSW

Fifty years ago this month, evolutionary biologist William Donald Hamilton published a solution to one of biology’s most enduring mysteries: why does altruism exist? Altruistic behaviours are those where…

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