In the last few years, researchers with UAF have drilled at Pilgrim Springs, looking for the hottest spots amid the steaming pools and snowless fields. They and others with private firms and the state are trying to determine if Pilgrim's energy might be a source of geothermal power for Alaska.
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
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 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
Backers of the proposed Pebble mine aren't done fighting the Environmental Protection Agency, environmental activists, fishing groups and others to keep the massive proposed gold and copper mine alive. Erica Martinson