From above I saw them: Two little girls, about 7 years old, lying on the tundra, talking. One on her belly, the other on her back. The sun was out. There was a breeze strong enough to keep the ...

Shrub expansion has occurred across much of the arctic tundra over the past century. Increasing dominance of woody vegetation is expected to have global influences on climate patterns and lead to ...

The Arctic is the fastest-warming place on Earth, leading to a greener tundra and thawing permafrost. But there is a surprising upside to more plants, at least in the short term ...