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Just when seismologists thought the earthquake swarm near Noatak had settled down, a magnitude 4.55 quake shook the region.

Jillian Rogers
With a 103-foot wingspan, the single-engine ER-2 performs like a jet-powered glider, cruising at 60,000 feet to collect data about Arctic sea ice and requiring a pair of pilots -- one in the aircraft, one on the ground -- to execute a landing.Dermot Cole
The discovery of a qargi -- a prehistoric communal house -- has opened an opportunity for National Park Service officials to enlist the help of locals to help uncover a piece of the region's heritage.Jillian Rogers
Known as Max, Aequorea or simply No. 539, the whale was known for frequenting Southeast Alaska's Icy Strait as well as Glacier Bay, where she was first documented in 1975.Devin Kelly
Dinosaur footprints found in Denali National Park and Preserve suggest that some of the polar dinosaurs that roamed the region 70 million years ago lived and traveled in multigenerational herds.Yereth Rosen
The Air Force said it will slow down the closure of the HAARP site near Gakona until next spring, while scientists hoping to save it argue that the Air Force should leave diagnostic equipment in place if the site is to be saved.Dermot Cole
Until recently, the Arctic Ocean's central Beaufort Sea was ice-covered throughout the summer. But with a greater expanse of open water, scientists are tracking how waves and well-traveled swells could accelerate the loss of summer ice.Pete Spotts

The Inupiat have a name for walrus with extra tusks, says Mary Sage of Barrow, who shared photos of the spoils of a recent hunt: Tulugiagruaq.

 

Kyle Hopkins
Communities along Alaska's southeast and southwest coasts have economies most vulnerable to ocean acidification, which especially threatens shellfish and the finfish -- such as salmon -- that eat them.Yereth Rosen
The Porcupine Caribou Herd could face difficulty in coming years if a trend of increased wildfires in northern Alaska and Canada continue to threaten the animals' wintertime food source of lichen, according to a new study.Yereth Rosen

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