Denver Zoo’s Asian Tropics Project

Ten acres to roam.Shade trees. Mud baths. These are all features of Asian Tropics, a proposed habitat at the Denver zoo.It's meant to encourage breeding in a rapidly vanishing species. Critics say no zoo can give elephants the space they really need. Ryan Warner speaks with Craig Piper, vice president of The Denver Zoo and Marc Bekoff, professor emeritus of animal behavior at the University of Colorado.