Glass frogs are pretty remarkable creatures. Of the 150 species, many have transparent abdomens that give viewers a glimpse into their inner workings—guts, heart and all. Now, as Mindy Weisberger ...

Alongside a pristine stream in the foothills of the Ecuadorian Andes, a team of researchers has found a graceful glass frog that's new to science. Unlike its close relatives, this amphibian has ...