Science

The flies, similar in appearance to common house flies, have emerged in large numbers over the past month at Kenai National Wildlife Refuge.

 

Yereth Rosen
Warmth and moisture mean ideal conditions for birch trees, which can produce more seed and fewer catkins -- good news for allergy suffers.Associated Press
The Semisopochnoi Volcano in the Aleutian Islands has been especially active in the last few days, prompting the U.S. Geological Survey to upgrade its aviation code to yellow and its alert level to "advisory."Megan Edge
Matthew Sturm, 62, is preparing for another of his long-distance traverses, versions of which he has executed since 1990, starting in Circle and heading north toward Fort Yukon and beyond. They'll take snow measurements along the way. Ned Rozell
Despite a few dirty particles, Denali air is good stuff. In a 2013 report on air quality in national parks, Denali was the only park in the country with visibility rated "in good condition," while 156 others warranted ''moderate concern" and 189 "significant concern."Ned Rozell
The R/V Sikuliaq, whose name means "young sea ice," will give researchers access into the ice edge, the site of dramatic climate changes. Yereth Rosen
The noisiest places found so far in the world’s oceans are some of the most scenic – saltwater fjords where glaciers drop chunks of blue-white ice, according to newly published data collected in Alaska and Antarctica.Yereth Rosen
The federal estimate of the number of beluga whales in Alaska's Cook Inlet increased slightly in 2014, but researchers conclude the population remains in danger of extinction.Dan Joling
Restrictions on bag limits and season length will start July 1 for both the Western Arctic and Teshekpuk herds, whose numbers are dropping. Restrictions will affect both resident and nonresident hunters.Jillian Rogers
State and federal managers are turning to village residents to help plan what promises to be another summer of frustration, with restricted fishing in a region that depends on salmon as a main food source.Lisa Demer