An international team of researchers have discovered seven new species of tree frogs that make otherworldly calls in the rainforests of Madagascar. Their strange, high-pitched whistling calls sound ...

THE SANTA ROSA PLATEAU ECOLOGICAL RESERVE, Calif. — The scientist traipses to a pond wearing rubber boots but he doesn’t enter the water. Instead, Brad Hollingsworth squats next to its swampy edge and ...

Frog mating calls change with temperature and may signal when ponds are safe for breeding, offering insight into climate change.

Every other Friday, the Outside/In team here at NHPR answers listener questions about the natural world. Today's question comes from Andy, calling from Dover, New Hampshire. Alejandro Vélez: That is a ...

More than 7,000 species of frogs hop, climb and perch around our world—which means more than 7,000 unique frog calls permeate our air. “The diversity of frog sounds is hard to overstate,” says Mark ...