Anna Machin is an evolutionary anthropologist who says that it's time western society acknowledged that dads are co-parents too. While advertisements may have us believe that dads are hopeless creatures who can't change a nappy or turn on a washing machine, Anna argues that men have an evolutionary drive to be engaged fathers. Anna explains how hormones change in men when they become dads, and why they are vitally important to the survival of our species. Anna is the author of The Life of Dad, the making of the modern father.

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