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The temperatures at a field research station near Toolik Lake, north of Alaska's Brooks Range, are still frigid, but activity in preparation for the busy summer season is already under way.

Ned Rozell
Moon eclipse 2014: The first total lunar eclipse of the year will be visible to most of North and South America tonight. Those in the northeast will miss the tail end of the eclipse, but will see the deep red phase some call the 'blood moon'.Liz Fuller-Wright
Traces of some pesticides that were likely never used in Alaska have been showing up in fish tested in the state's national parks, according to a new study. And they appear to be arriving in some roundabout ways.Yereth Rosen
The areas coveted as sea routes for commercial shippers seeking to exploit increasingly ice-free Arctic waters are the same areas that are vital to millions of seabirds that flock north each summer to feast under the midnight sun, says a newly published study.Yereth Rosen

Ride out the bore tide with whitewater kayakers in this video shot in Anchorage's aquatic backyard.

Tara Young
The end could be near for the High Frequency Active Auroral Research Program near Glennallen unless the Air Force finds an organization to run the facility. The Geophysical Institute at the University of Alaska Fairbanks hopes to put together a plan to take on the task.Dermot Cole
A few miles from the Arctic Circle on the United States' only Arctic highway, there’s a sloped area notorious for a series of dips and buckles  caused by seasonal thaw and subsurface meltwater. The "frost boils" of Beaver Slide may have met their match.Yereth Rosen
As permafrost thaws, it changes the composition of vegetation in the Arctic. This could accelerate global warming, say scientists.Sudeshna Chowdhury
Alaska's polar, brown and black bears are the descendants of common ancestors that first began to split off into different species more than a million years ago, says a new study. Another study suggests one isolated population of brown bears may be more related to polar bears than to other brown bears.Yereth Rosen
Arctic sea ice reached its maximum annual coverage two weeks ago. While the cover was the fifth-lowest maximum since 1979, data also shows a higher proportion of ice is sticking around through multiple years.Yereth Rosen