Since the end of the last ice age, 20,000 years ago, a unique fauna has adapted, and with what ingenuity, to the polar regions. This adaptation is so complete that global warming threatens all the emblematic species of the cold: the polar bear, the caribou, the emperor penguin or the icefish, but also a whole terrestrial and marine fauna and flora that are still poorly understood. With the retreat of the ice pack, a mass extinction is brewing in the North, as in the South...