Chimpanzees have been known to cooperate when there is no foreseeable personal cost. Watch and learn whether chimps are capable of riskier, more complex forms of collaboration.
0 minute ago — Priyamvada Natarajan and Lee Billings
July 8, 2020 — Erik Olsen
May 19, 2020 — Kit R. Roane
April 27, 2020 — Jeffery DelViscio