High up in the mountains, in a rocky world left behind by melting glaciers, life finds an unlikely jumpstart—thanks to poop.

Chemical analysis reveals traces of a number of psychoactive compounds thought to have been used to secure leaders' status ...

It is another steamy morning in Puerto Maldonado, and Gabriel Granados Olivera and I are sitting on a low-slung motorized ...

These training opportunities and expeditions — from King George Island in Antarctica to the Norwegian archipelago of Svalbard in the Arctic, and from the Andes to the eastern Tibetan Plateau — are ...