Environment

A new study says that over the long term, Arctic lakes thawing above permafrost can have a net benefit for the climate after an initial release of greenhouse gases -- but the most recent warming cycle may follow a much different path than previous thaws.Yereth Rosen
In Southeast Alaska, several mines in watersheds that straddle the border with Canada worry fishermen. Heightening those concerns is the fact that the same engineering consultant who designed the tailings dam that breached in Canada is involved in other area projects. Pat Forgey
Fish and Game  has stopped reporting the number of Kenai River red salmon going past its sonar counter 19 miles upriver from the mouth because humpies have flooded the river, making it difficult for biologists to differentiate between the species.Sean Doogan

Artist Diedra Krieger and volunteers inserted plastic drink bottles into the mesh on a dome constructed by Krieger on the front lawn of the Anchorage Museum on Friday, August 1, 2014. The event was part of the "Gyre: The Plastic Ocean" exhibit at the museum.

Bob Hallinen
While the long-term trend of less summer Arctic ice is clear, the short-term outlook for total melt in any given year is far murkier, thanks to the many and sometimes highly volatile factors that drive the final outcome. Yereth Rosen
A Dutch Harbor seafood plant employee has agreed to plead guilty to a Clean Air Act violation for tampering with machines designed to reduce nitrogen dioxide emissions.Jerzy Shedlock
Anchorage recorded its second-rainiest 60-day period since 1952 from June 1 through July 30, falling only a handful of raindrops short of the 1958 record, the National Weather Service says. Tegan Hanlon
Energy giant Shell announced a deal to share leases and exploration expenses with Arctic Slope Regional Corp. and six North Slope Inupiat village corporations.Yereth Rosen
Oil companies that had locked up more than 1.3 million acres of the Beaufort Sea for drilling in 2007 have since relinquished nearly half that territory, signaling the industry’s appetite for tapping those Arctic waters may be waning even as the Obama administration makes plans to auction off more of the area. Jennifer A. Dlouhy | Hearst Newspapers
Scientists watch as the Mendenhall Glacier, a popular visitor stop in Southeast Alaska, continues to retreat. What will happen to tourism when it disappears from view?Pat Forgey