The Cooking Hypothesis

There are a number of theories that involve the intersection of fire and changes to humans ar ourselves, our own biology. One major example is the cooking hypothesis, which i think we've alluded to on the show before. But this is a hypothesis put forward by a british anthropologist and primatologist named richard wrangham. He argues that there is a link between the invention of cooking, which necessitates fire, and the shape of modern human bodies, guts and brains.