Despite our fascination with them, the number of big cats in the wild is declining. Lions currently occupy 10% of their historical range with less than 20,000 left in the wild. Snow leopards are ...

Bird flu is here to stay. The H5N1 avian influenza is proliferating among U.S. cows and there are now two strains circulating among mammals and birds. Though there are only 68 confirmed cases in ...