Science

Most of the 17 species of worms in Alaska seem to be exotic types that have recently settled the last Frontier with the help of humans, who gave them a lift.

Ned Rozell
Weather permitting, Alaskans will be able to see a total lunar eclipse early Saturday morning. When the moon is completely immersed in the Earth's shadow, it is expected to turn a reddish-orange color for a few fleeting minutes.Laurel Andrews
A series of new studies indicates polar bear diets are changing to include land-based foods as sea ice diminishes -- but those foods aren't abundant enough, nor of the right kind, to sustain the bears.Yereth Rosen
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
Permafrost in the circumpolar north will likely continue to thaw and release carbon dioxide and methane, but at a gradual rate instead of as a "carbon bomb," said a study published recently in the journal Nature. Yereth Rosen
An Alaska Volcano Observatory webcam picked up what appeared to be a large brown bear inspecting some monitoring equipment on Thursday.Alaska Dispatch News
A study of the migration of rare western Pacific gray whales has led U.S. and Russian scientists to question whether they're a separate population or simply California gray whales that have expanded their feeding grounds.Dan Joling | Associated Press