“Cobby was part of San Francisco. He touched so many lives."
Research finds that human activity may be contributing to the loss of cultural behaviors among chimps.
"The news today is our president is a liar, and not even a good one."
Steve Wise wants to establish legal "personhood" for animals to challenge their captivity.
Authorities resorted to a tranquilizer to get the chimp down.
"We have moved on from the time when research on chimpanzees was considered essential."