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Algorithms reveal “social tiers” in gorillas seen in only a few other species, such as dolphins and humans. Researchers suggest that some of these social bonds may be analogous to “old friendships” and “tribes” in humans.

Oral vaccine offers hope for ape species ravaged by Ebola and other diseases, as it can be widely dispersed to save more wild animals. However, scientists say recent law changes on captive chimpanzee testing may stop the conservation work in its tracks.

A student-led to be webcast live will ask, in light of recent research, whether the story of human origin is radically different from established thinking, and what that might mean for everything from genetics to the birth of culture.