The difficulty of finding smoking gun evidence   Publication Date:   2010 Creator:   Joyce Maschinski Joie Goodman Phillip Hughes Joe McAuliffe Kathy Rice Julissa Roncal Publisher.Display:   Fairchild Tropical Botanic Garden Subjects.Display:   Climate change Salinity cactus unknownFlorida unknownFlorida Keys (Fla.) Source Institution:   Florida International University The difficulty of finding smoking gun evidence