For humans, the Arctic is a harshly inhospitable place, but the conditions there

For humans, the Arctic is a harshly inhospitable place, but the conditions there are precisely what polar bears require to survive – and thrive. ‘Harsh’ to us is ‘home’ for them. Take away the ice and snow, increase the temperature by even a little, and the realm that makes their lives possible literally melts away.
– Sylvia Earle –