"Bowling really was a big American sport in the '50s, '60s, and '70s, and then it kind of died off in the '80s."

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Bonobo studies started in the '70s and came to fruition in the '80s. Then in the '90s, all of a sudden, boom, they ended because of the warfare in the Congo. It was really bad for the bonobo and ironic that people with their warfare were preventing us from studying the hippies of the primate world.

— Frans de Waal