Our planet is vast, and so many species live on it. Nevertheless, it's not always easy to keep track of animal populations over such a vast area. Especially since, quite rightly, wildlife tries as ...

(CN) — For months, environmental groups have fought to stop heavy drilling equipment from crossing the fragile tundra near Teshekpuk Lake, Alaska, where delicate mosses and sedges support caribou ...

(CNN) — Moonshot proposals to save the planet’s ice sheets, including giant underwater sea curtains and refreezing Arctic ice, are gaining popularity as the planet heats up. But none of the most ...