Fossils show that howler monkey ancestors were eating leaves 13 million years ago, shaping body size and evolution.

A colony of African vervets in Dania Beach raises big questions about how humans can and should manage nonnative species.

An extinct relative of the howler monkey may have been the first leaf-eating primate in South and Central America ...

The golden lion tamarin, a striking primate of Brazil’s Atlantic Forest, has become a symbol of global wildlife conservation.

From cancer to Alzheimer’s: could a renewed focus on energy transform biomedicine? Including energy dynamics in research could improve our understanding of diseases and of the healing processes that ...