Can the secrets of our past be found in the jungle? And what can it tell us about our future? Accompany researchers in NATURE�s Deep Jungle: The Beast Within as they explore tropical forests for clues about the origins of humans and what our own future might hold. In a bid to understand the genesis of human aggression, primatologist David Watts travels to Uganda�s Kibale National Park to study chimpanzees. In the past, researchers had witnessed these primates hunting, killing, and eating colobus monkeys. Watts, however, made a chilling new discovery that these primates also hunted and murdered their own kind. The theory under investigation is that violence may help chimp groups cement social ties.

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