There are only two main coffee species that are used to create the coffees that most people drink: Arabica and Robusta. About 70% of all coffee varieties consumed globally are derived from the Arabica bean. Scientists recently predicted that the Arabica plant could go extinct before the end of this century due to global warming. Worldview talks about the endangered coffee bean with Kate Sackman of EcoMyths Alliance, Morton Arboretum vice president of science and conservation Nicole Cavender and Abigail Derby Lewis, conservation ecologist at the Field Museum of Natural History. (Photo: AP Photo/Ricardo Mazalan)