Arctic

Since the beginning of the 20th century, the report finds surface air temperatures in the Arctic have increased by 5.2 degrees Fahrenheit.

Two Democratic U.S. senators have introduced a bill to designate parts of the Arctic National Wildlife Refuge as a permanent wilderness area.

Studies recommended relocating villages like Newtok, Kivalina and Shishmaref. But more than 10 years later they are still there, with waves getting higher and storms getting stronger.

For years scientists have documented changes in Alaska’s vegetation caused by a warmer climate. Researchers are now seeing animals establish new habitats on the North Slope in response to the altered landscape.

A tribal citizen science network that got its start in Alaska is being touted as a model for tracking climate change in the Arctic. The eight-nation Arctic Council plans to expand the Local Environmental Observer Network to other Arctic nations.

Norwegian oil company Statoil said Tuesday it will end exploration efforts in the Chukchi Sea and close its Anchorage office.