Alaska’s growing shellfish farming industry could be in trouble if it can’t overcome increasing ocean acidification, according to a new report published in the scientific journal PLOS ONE. Erica Martinson
About a third of the world's polar bears could be in imminent danger from greenhouse gas emissions in as soon as a decade, a U.S. government report shows.Mark Thiessen | Associated Press
A regulation meant to protect Arctic walruses prohibits simultaneous operation of two drill rigs within 15 miles of each other. That means Shell's Chukchi well sites, which are clustered together, likely won't be drilled simultaneously, an Interior spokeswoman says. Yereth Rosen
As Arctic sea ice melts, it could disrupt a powerful Atlantic Ocean current that regulates temperatures in Western Europe and the East Coast of North America.Chelsea Harvey | The Washington Post
Researchers offer a new explanation for Greenland’s glacial earthquakes, which have become increasingly frequent in recent years.Joseph Dussault
Of 32 separate forecasts that use different models and methodology, most expect September sea-ice extent to be low but well above the record minimum hit in 2012. Yereth Rosen

Lake Hood has long been touted as part of the world’s busiest floatplane center. Now it could be the vector for the spread of elodea, a leafy, long-stemmed plant notorious for crowding out native species of freshwater flora.


Bob Hallinen
Elodea, an aggressive invasive plant, was discovered this month in the lake used by hundreds of floatplanes, raising fears that it will be spread to multiple sites within flying reach. Yereth Rosen
The Interior Department found more than $40 billion in historic and cultural resources on national park lands are at risk from sea-level rise, according to a report released Tuesday. No Alaska parks were part of the review, but four are part of a next-round investigation already underway.   Erica Martinson
While warming temperatures have trimmed the time operators on Alaska's North Slope can build ice roads or move vehicles over frozen ground, recent advances are allowing land users to reclaim some of the lost season.Yereth Rosen