Yereth Rosen

Following a record-low winter maximum hit in late February, Arctic sea ice extent in March was the lowest for that month since satellite records began nearly four decades ago, according to a release from the National Snow and Ice Data Center on Tuesday.

For the month of March, average ice extent was 14.39 million square kilometers (5.56 million square miles), about 7.3 percent below the 1981-2010 average for March, the Boulder-based center reported ...

Yereth Rosen

Prudhoe Bay is no longer No. 1 in the U.S. oil world, experts say.

The oil field, home to the huge hydrocarbon reservoir that inspired construction of the trans-Alaska oil pipeline and kicked off an economic boom that transformed the state, now ranks third in the nation for remaining oil reserves, according to a new Department of Energy report .

Prudhoe Bay has slipped behind two Texas oil-field units that are at the forefront of the shale-oil revolution, according to the report, issued by the U.S Energy Information Administration , an agency of the Department of Energy...

Yereth Rosen

Finnish researchers have a health tip for middle-aged men: To stay alive, spend more time in the sauna.

A 20-year study led by scientists from the University of Eastern Finland found that frequent sauna use was significantly correlated with lowered risk of death from heart attacks, coronary heart disease, cardiovascular disease and mortality in general...

Yereth Rosen

Now that the Department of the Interior has, for the second time, affirmed the record-breaking Chukchi Sea lease sale it held seven years ago, is it smooth sailing for Royal Dutch Shell and its plans to drill this year on leases purchased in the sale?

Not so fast...

Yereth Rosen

As summer and autumn sea ice diminishes in the Arctic Sea, polar bears spending more time on shore have been spotted eating eggs, hunting down the nesting birds that lay them, hunting other land animals and even chewing on edible plants growing onshore.

But is that enough to sustain them in an ice-scarce Arctic?

No, says a new study by scientists from the U.S. Geological Survey, Washington State University and Polar Bears International.

The study analyzes food needs of polar bears, including their genetic metabolic characteristics, and the characteristics of the onshore ecosystems and the foods in them...

Yereth Rosen

U.S. Interior Secretary Sally Jewell on Tuesday validated the 2008 sale of oil and gas leases in the Chukchi Sea , a decision that brings Royal Dutch Shell a step closer to winning approval of drilling in those remote Arctic waters...

Yereth Rosen

Among the insects abuzz at the end of Alaska's unusually warm winter is a fly previously undocumented in Alaska -- Pollenia , commonly known as the cluster fly.

Since mid-February, cluster flies have been showing up in abundant numbers on buildings at or near the Kenai National Wildlife Refuge headquarters in Soldotna, said Matt Bowser, an entomologist based at the refuge. He collected 35 specimens between mid-February and mid-March -- from building walls, from snow, from cobwebs and from various sunny surfaces -- and said many more were hanging around...

Yereth Rosen

Climate change in Northwest Alaska is good for the birds -- at least for some of them -- but bad news for several small mammals.

As shrubs and trees spread north with rising temperatures, so will some bird species. Tree-dwellers like northern goshawks are among the projected climate change winners listed in a new study predicting long-term changes in boreal and Arctic habitats used by 162 bird species and 39 land mammal species in Northwest Alaska...

Yereth Rosen

After an odd Alaska winter of record-warm temperatures and pouring rain instead of snow, will summer be weird as well?

While scientists say more such winters can be expected in Alaska in the long term as the climate heats up, predicting what will happen in the short term is iffy. Still, resource managers are making some contingency plans for a challenging summer, and scientists have some advice in case the next few months are as unusual as the last few...

Yereth Rosen

Winter Arctic sea ice extent this year was the lowest in the satellite record, the National Snow and Ice Data Center said on Thursday , confirming a prediction it made two weeks ago.

Peak winter extent was reached on Feb. 25, with 5.61 million square miles of Arctic waters having at least 15 percent ice coverage, the center said. That maximum was about 7 percent smaller than the average winter maximum of 6.04 million square miles recorded from 1981 to 2010, the center said...

Yereth Rosen

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