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In part one of Neanderthal Apocalypse, we look at how the Neanderthal physique and hunting techniques could have contributed to its demise. Anthropologists from Princeton and the University of Wisconsin compare the body builds of the stocky Neanderthal and the lean modern human to see what the role of muscle mass plays in surviving harsh winter months. Then we follow our weapons experts as they take a stab at discovering which hunting method is more effective: the thrusting or throwing spear.