Frogs have been on this planet for almost 200-million years. They've adapted to nearly every place on earth, including harsh environments like scorching deserts and Arctic tundra. And yet frogs around the world are now dying off at alarming rates. Southern California has three species of frogs that are teetering on the brink of extinction. KPCC's Ilsa Setziol recently hit the trail in search of one of them. She has this report.
