BBC Earth: There may be a type of caribou that science never noticed

Credit: Jose Schell/naturepl.com.

Credit: Jose Schell/naturepl.com.

As you move north from the broad reaches of Great Bear Lake in the Northwest Territories of Canada, spruce forests first give way to scrubby taiga, then to the hard, smooth rocks of the Canadian Shield, and finally to the southern Arctic. This is the Sahtú region. Read More...