On the Arctic the effect of global warming are the most visible.

The most visible sign of the environmental damage caused by humans, the melting of the ice on the oceans and on land is a local and global problem. Arctic ecosystems, whose best known species is the polar bear, are under threat. Native peoples, particularly the Inuits, also see their living conditions worsen as the ice melts. As the ice-cap melts, sea-levels will rise drastically. The northwest passage that connects America, Europe and Asia via the pole, is opening up. The arctic ice cap is melting. Under the effect of global warming the ice cap in the North Pole has lost 30% of its surface area in 30 years. Its surface area in the summer shrinks year by year. It could disappear in the summer months by 2030.