WASHINGTON (AP) — Now you see them, now you don’t. Some frogs found in South and Central America have the rare ability to turn on and off their nearly transparent appearance, researchers report ...

A new frog species has been discovered hopping around South America - with nothing to hide. The Guajira Giant Glass Frog lives on an isolated mountain range in Colombia. It's described as a ...

At first glance, it might look like a tiny green jewel clinging to a leaf in the rainforest. But if you get closer — and look from just the right angle — you’ll notice something astonishing: you can ...