frogs

A Fowler's toad resting on beach sand.

A Fowler’s toad rests on the sand in Fire Island, New York. (Skylar Epstein/George Washington University)

Planet Forward Correspondent | George Washington University
Dr. Karen Lips hypothesized that the collapse of the amphibian populations was sweeping through Central America like a wave. So, in order to gather evidence for the theory, she would have to get out in front of this wave.