Orangutans face a changing climate and are hemmed in by a growing human population using novel technologies to hunt them down. It's a situation they have been in before — 20,000 years ago.
Forest elephants disperse large seeds, keep the forest canopy open, and spread rare nutrients across the forest, benefiting numerous species across the African tropics.
Turtles were once a tough group of animals. Sea turtles survived the extinction event that wiped out the dinosaurs some 65 million years ago. But the modern descendants of this ancient group are struggling to survive.
