Since the Endangered Species Act was enacted in 1973, many species have been saved from extinction, including the bald eagle, the humpback whale, and the American bison. Sometimes, however, despite enormous investments of time and money, efforts to save a species are not successful. Trying to understand all the forces involved in the natural world is never an easy task. Here are some resources to start the learning process.<\/p>\n","protected":false},"excerpt":{"rendered":"