Arctic

Although the structure rises well above the seabed, it tops out at about 1,600 meters below the water’s surface, so it is too deep to pose any risks to navigation.

A new environmental study recommends additional protections for wildlife, waterways and permafrost, with new rules for a legally mandated lease sale.

Michael Sfraga, from Fairbanks, is “probably the most recognized go-to Arctic expert that we have,” Sen. Lisa Murkowski says.

Staff at the Seward-based center say the female calf was likely left on its own after a walrus herd passed through a beach area.

The lawsuit aims to void development restrictions in the National Petroleum Reserve-Alaska. A new Supreme Court decision may give it a boost.

The Healy, which is designed to break through ice up to 4.5 feet thick, is one of only two operating polar-class icebreakers owned by the Coast Guard.

In recent years, all five salmon species have shown up in rivers from northeast Alaska to Nunavut, in Canada’s eastern Arctic.

Whalers say it’s harder to find the thick, flat ice crews rely on to support the bowhead whales they pull in. Tools like the whaling maps and radar images help make whaling safer.

For Inupiat communities on the North Slope, bowhead whaling is a central part of spring. But climate change is adding an extra element of uncertainty to the whaling season.

The authors of a new report will join representatives from more than 180 other countries to negotiate a United Nations plastics treaty.