I saw macaques for the first time along the river’s edge on the island of Borneo in 1983. I was in a boat with scientist and conservationist Dr. Biruté Galdikas on our way to the orangutan rehabilitation and research site she established on the island....

The sperm whale is extreme. They have the largest brains and the largest noses on Earth. The sperm whale’s nose is a huge and sophisticated sonar device that produces the most powerful sounds of any animal—and we’re only just starting to understand their communication methods...

Experimenting on monkeys is cruel—and keeping them is a threat to public health.