A rich symphony of frog calls gives us hope that winter is over. The familiar sleigh bell-like chorus of spring peepers, the duck-like chuckle of wood frogs, and the long musical trill of American
toads are distinctive sounds that these amphibians use to communicate.
Frogs have survived for 250 million years through countless ice ages, asteroid crashes, and other environmental disturbances, yet they may not survive the human era. Since the 1970s the world has lost approximately 200 frog species, and hundreds more face extinction in the coming decades according to research published in the Proceedings of the National Academy of Sciences. Learn more in this week's NIE page.