"I was stalked by a puma once when I was a park ranger," says Danny Herrera-Badilla, as we trek down a trail in the tangled ...

Thomas Cole was worried. He had left Pennsylvania for New Hampshire's White Mountains in the summer of 1827 on the advice of his patron, Daniel Wadsworth. Once there, the English-born painter marveled ...

This big-eyed rainforest mammal looks like a cross between a bat and a squirrel. It glides between treetops using a furry ...