Camouflage takes many forms in the natural world. Some animals are born with skin or coats that blend in naturally with their environment. Some Old World lizards like the chameleon have an almost ...

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 ...

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 ...