Biologists have long wondered why caribou are the only deer in the world in which females—like males—have antlers. A study of ...

Fifteen Democratic-led states have dropped a 6-year-old lawsuit challenging the legality of a federal plan that allowed oil ...

Biologists have long wondered why caribou are the only deer in the world in which females, like males, have antlers. A new study of shed antlers collected from calving grounds in the Arctic ...

Female caribou chew shed antlers to get calcium and phosphorus. These minerals help them produce milk after giving birth.

Add Yahoo as a preferred source to see more of our stories on Google. A sign in Kaktovik with images of polar bears is seen on Sept. 24, 2018. (Photo by Yereth Rosen/Alaska Beacon) A sign in Kaktovik ...

Add Yahoo as a preferred source to see more of our stories on Google. A snowy owl stands on the tundra of the Arctic National Wildlife Refuge's coastal plain on June 29, 2018. (Photo by Lisa Hupp/U.S.

Tens of thousands of caribou feed and breed in this area, which is the size of Maine. Migratory birds flock to its lakes in summer, and fish rely on the many rivers that crisscross the region. The ...

The fire remained 0% contained on Feb. 25 and was discovered late on Sunday, Feb. 22., in Big Cypress National Preserve south ...

Whether it's redfin pickerel in the Kennebec River or sturgeon in the Great Lakes, nearly one-third of freshwater fish ...