National Geographic : 2004 Sep
*North Pole , North Pole Hot zone The Arctic is warming several times faster than most of the planet; ice there is melting on land and at sea. The release of fresh water into the oceans could GREENLSA GREENL/ change the course of currents that play a vital role in climate. Runoff from glaciers on land is already contributing to a global rise in sea level. Uncertain scenarios In the next century some coastlines could migrate miles inland, displacing tens of millions of people. Siberia and northern Canada could experience a warmer, wetter climate. Other regions could suffer more frequent and severe droughts. Taking steps now to rein in greenhouse gas emissions could limit these impacts.