How to climb the social ladder in ancient Rome

It is easy to imagine ancient Rome as a society where the emperors, senators and other nobles sat on top of an undifferentiated, static mass of ordinary Romans (who in turn sat above the mass of slaves). But Roman society ...

The evolution of altruistic defense in enslaved ants

New research looks at the evolution of an altruistic defense by enslaved Temnothorax longispinosus ant workers that rebel against their social parasite Temnothorax americanus, a slavemaking ant.

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