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A sophisticated earthquake detector being installed in the Interior Alaska community of Minto is part of a plan to carpet the state with such instruments every 50 miles, from the Alaska Peninsula to Barrow.

Ned Rozell
Sensing shorter periods of daylight, trees have quit refreshing their leaves with chlorophyll, the green pigment that helps capture the sun's energy and allows the tree to convert it to the sugars that make it taller and bushier.Ned Rozell
Mount Cleveland is so remote -- an 18-hour boat trip from Dutch Harbor -- that Alaska scientists have been unable to station scientific gear on the volcano. Until now.Sean Doogan
Leffingwell made 31 trips around the area by sled and small boat, covered about 4,500 miles, and camped in a tent “about 380 times.” This detail he included in a 250-page report for the USGS that reads like a manual on how to live and perform science in the far north.Ned Rozell
North Slope ravens have forced one researcher to go incognito so she can get closer to the birds to determine why they live in such a harsh climate. Ned Rozell
The equipment, installed in Barrow, will be able to detect Alaska earthquakes, as well as magnitude 5 earthquakes from around the world.Jillian Rogers
This summer has been different, with twice the average amounts of rain falling on Fairbanks during June and July. Everything looks, smells and sounds a bit different. Ned Rozell
The most effective way of capturing a singing male flycatcher is to challenge its machismo with the presence of a rival and then catch it with a net when it swoops to protect its territory. A bird decoy is more effective at pulling a bird from its perch than a song recording alone.Ned Rozell
Just when seismologists thought the earthquake swarm near Noatak had settled down, a magnitude 4.55 quake shook the region.Jillian Rogers
The U.S. agency that explores outer space is also probing another frontier -- the rapidly warming climate in Alaska and other parts of the Far North.Yereth Rosen