Chimpanzees are humans' closest living relatives, sharing more than 98% of our DNA. They are endangered, with fewer than 250,000 left and an annual decline of between 1.5% and 6%. This is due to ...

AMES, Iowa – It was a discovery that changed what researchers knew about the hunting techniques of chimpanzees. In 2007, Jill Pruetz first reported savanna chimps at her research site in Fongoli, ...