Science

Archeologist Ted Goebel and his coworkers found eight fragments of spear points at or near the Serpentine site in Northwest Alaska. They carbon-dated the charcoal they found with the points. The carbon was about 12,000 years old.

Ned Rozell
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

The Nerds of the North robotics team has a saying: “'Nerd' is a four-letter word with a six-figure salary." Alaska's only FIRST Robotics Competition (FRC) team, number 568, is in its 15th year and competing in the organization's world championships.

Tara Young
Researchers have deciphered the complete DNA code, or genomes, of two mammoths. The new genomes are far more refined than one announced in 2008.Malcolm Ritter | Associated Press