Ours blanc : chronique d'une extinction annoncée

Adapté aux conditions extrêmes de la vie sur la banquise, l'ours polaire voit son existence menacée par le recul de la glace de mer en Arctique. La situation est d'autant plus alarmante que ce carnivore serait incapable de retourner à la vie terrestre.
Polar bears and ice go together in our minds as automatically as salt and pepper. The largest of the terrestrial carnivores, polar bears are uniquely adapted to live on Arctic sea ice. The significance of that relationship can be expressed quite simply: polar bears came into existence in the first place because of sea ice - if the ice disappears, so will the polar bears...