frozen in ice on a barren tundra in northwest Wyoming. Uncovering the rest of the story is a race against time. The ghostly fallen trees and stumps were revealed in a melting ice patch in the ...

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 ...

Landscape fires trigger soil erosion processes: the tundra's upper cover, being left without plant protection, warms up faster and deeper, which leads to a significant degradation of the permafrost.