This undated photo provided by the Morton Arboretum in September 2012 shows blue ash trees (Fraxinus quadrangulata). On Thursday, Sept. 14, 2017, the International Union for the Conservation of Nature said five prominent species of ash tree in the eastern U.S. have been driven to the brink of extinction from years of lethal attack by the ash borer beetle. (Morton Arboretum via AP)
Featured Photo Galleries
