"BP Plc on Tuesday began cleaning up an oil spill from a leaky Alaskan pipeline, but said it has not determined what caused the leak or how much material spilled onto the snow-covered tundra."
Alaska and Hawaii
"A government study found that a group of endangered beluga whales in Alaska is declining, raising concern that bolstered protection for the animals is not coming quickly enough."
"Just a few years ago, king salmon played an outsize role in villages along the Yukon River....But this year, a total ban on commercial fishing for king salmon on the river in Alaska has strained poor communities and stripped the prized Yukon fish off menus in the lower 48 states."
Birds on the North Slope in Alaska may be threatened by predators whose populations are encouraged by oil exploration and production.
"Billions of tons of carbon are buried in the frozen Arctic tundra, now heating up because of human-caused climate change. To measure which greenhouse gases are being released and in what quantities, government scientists are flying instrument-laden planes over the tundra from now through November."
"Alaska's marine waters -- source of 60 percent of the United States' seafood harvest -- show surprising impact as greenhouse emissions undermine the base of the food web."
"The U.S. Army Corps of Engineers reissued a permit Friday to Coeur Alaska Inc. for its Kensington mine plans, clearing the way for construction to resume on the final component of the complex that's been on hold since 2006 because of environmentalists' lawsuits."
"With a deadline looming for approval of a federal plan that would open the Gulf of Mexico to deepwater fish farming, House lawmakers and conservationists are plotting strategies to block such offshore ventures until Congress creates a system to regulate them."
"State regulators violated the Alaska Constitution when they approved exploration permits for the proposed Pebble copper and gold mine without allowing the public to weigh in first, according to a civil lawsuit filed Wednesday."
The Obama administration releases high-resolution photos, taken by US spy satellites over the years, documenting the extent and quality of arctic sea ice.