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What is the purpose of childhood?

One thing that distinguishes humans from our closest primate relatives is how we make and raise babies. Brenna Hassett is a biological anthropologist and researcher at University College London, as well as a scientific associate at the Natural History Museum, London. She joins host Krys Boyd to discuss how childhood as we know it was created, why difficult pregnancies are a clue to the kind of children we want, and how fossil records can point us toward how we’ve evolved to raise children today. Her book is “Growing Up Human: The Evolution of Childhood.”