Peyote may look like a small, unassuming cactus - but it holds a powerful secret. In this episode, we explore the fascinating biology and cultural history of Lophophora williamsii, a plant known for ...

A small, little-known cactus found in Organ Pipe National Monument west of Tucson faces a "high and immediate" threat of extinction, says the U.S. Fish and Wildlife Service in proposing ...