The first existence of a multilevel society in a non-mammalian animal shows that large brains are not a requirement for complex societies. Multilevel societies have, until now, only been known to ...

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We may have ritual killing to thank in part for our complex modern society, according to a new study in Nature. Human sacrifice is not a rare or isolated human behavior. It's been done throughout ...

Multilevel societies have, until now, only been known to exist among large-brained mammals including humans, other primates, elephants, giraffes, and dolphins. Now, scientists from the Max Planck ...