> Start a campaign for tundra deforestation? That can't be right. They are not talking about deforestation, but growth on previously barren ground: "We now kno

> Start a campaign for tundra deforestation? That can't be right. They are not talking about deforestation, but growth on previously barren ground: "We now know that a lot of greening has been going on there, too, with tall shrubs and woody vegetation. The vegetation has been getting both taller and expanding in space and range."