Energy and Evolution with Herman Pontzer

Why Is This Happening? The Chris Hayes Podcast - A podcast by Chris Hayes, MSNBC & NBCNews THINK - Tuesdays

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How does the human body take in and use energy? It is a simple question, but one that we still do not have a definitive answer to. This week Associate Professor of Evolutionary Anthropology, Herman Pontzer, joins to shed light on these evolutionary mysteries.