For caribou, growth of woody plants like alders and willows means problems. Caribou depend on tundra plants like lichen and mosses; the shrubs and trees taking over the terrain are reducing the ...

Watch in 360 as a herd of female caribou ... tundra's permafrost for predators like wolves. At the end of their journey in early June, the moms and calves will feed on the abundant grasses and ...