Greenland, "Green Country" of the Vikings, carries a misleading name. In winter or summer, most of this autonomous region of Denmark, four times larger than France, is covered with a thick armour of ice. We believe ice to be inert, but in truth it moves. And in Greenland its own weight drags it towards the sea. Lately, this movement has tended to accelerate sharply, which over time will affect the level of the oceans. Each of us contributes to making this island the green country that it was thousands of years ago. All around the world, millions of people risk paying dearly for this resurrection.