Snake Trouble in the Everglades

Imported snakes are taking over the Everglades, displacing alligators as the top predators and, a new study says, causing a decline in native mammals like raccoons and bobcats. Above, "University of Florida researchers hold a 162-pound Burmese python captured in Everglades National Park, Fla. Therese Walters, left, Alex Wolf and Michael R. Rochford are holding the 15-foot snake shortly after the python ate a six-foot American alligator."