Keeping Caribou In The Lower 48

Caribou are common in places like Alaska, but they also live in the Lower 48. In fact, the last herd found anywhere in the continental U.S. lives in the Pacific Northwest.

This winter, a group of biologists, tribal members and volunteers are trudging through forests in Idaho and Washington to collect lichen as part of a last-ditch effort to boost the herd's numbers. The Northwest News Network's Emily Schwing (@EmilySchwing) has more.