It is on the world-famous Kaibab Plateau, and this wondrous place has been the historical home to some of the largest mule deer in Arizona.

Botanists have found a stand of rare trees in Tanzania’s Zanzibar archipelago not known to grow wild anywhere else in Africa.

Often dismissed as pests, rats have long been misunderstood. But the African giant pouched rat (Cricetomys ansorgei), the world’s longest, is challenging that perception. With its intelligence and ...