For decades, the crowds of small, dark sea geese on the tundra of southwestern Alaska's Yukon-Kuskokwim Delta have been thinning, a situation opposite that of geese on the North Slope.
Black brant populations are struggling in the species' once-dominant Yukon-Kuskokwim Delta breeding areas, but conditions are better for brant breeding on the Arctic coastline.
More polar bears on land have been encountering more people in the Arctic, a perfect storm of dangerous conditions, one scientist says.
As Alaska warms and permafrost thaws, the chemistry of the Yukon River's water is transforming chemically, new research from the U.S. Geological Survey shows.
The elusive animals use snow caves to give birth and nurture their young. Just how much spring snow they need is not yet known.
The notoriously difficult-to-study Pacific walrus population decreased by about half between 1981 and 1999, likely due to hunting and changes to sea-ice habitat, according to a new USGS study that is considered the most up-to-date and comprehensive so far. The Pacific walrus is being considered for Endangered Species Act protections.
New research shows that permafrost soils hold massive quantities of mercury — nearly twice as much as is held in all other soils in the world, plus the mercury in the oceans and the atmosphere —
Vitamin D deficiencies have long been a concern in high latitudes because sunlight — which stimulates its production in the body — is scarce in winter months.
A new study quantifies the rate at which Eklutna Glacier is losing its icy mass. Between 1957 and 2010, the loss of glacier mass averaged 5 percent a year.
Elodea, an aggressive invasive plant, was discovered this month in the lake used by hundreds of floatplanes, raising fears that it will be spread to multiple sites within flying reach.
An enzyme protects squirrels during and after hibernation, and something similar could help people whose hearts shut down, a new study finds.
A mysterious disease, possibly a virus, has afflicted ring seals along Alaska's coast, killing scores of them since July, local and federal agencies said on Thursday.
Interior Alaskas hot and dry summer of 2013, coupled with an invasion of insect pests, has taken a steep toll on the regions birch trees, experts say.
Air emissions from Prudhoe Bay-area oil fields can have a big influence on the particles in the air in Utqiaġvik, the town formerly known as Barrow.
Arctic sea ice last month reached its greatest extent for the season, and it was the lowest in the satellite record. Now researchers say that ice is also younger and thinner than it once was.
The animals didn't necessarily become sick, researchers said, but were encountering the new pathogens much more frequently.
Disaster funds are reserved for single events, and storms that collectively cause much damage aren't often individually large enough to count as disasters.
Elodea, a fast-growing leafy plant, is now in a roadside ditch at the marsh, and a response plan is in the works.
A NOAA Ocean Exploration-led team has discovered what appears to be evidence of a large gas seep at a depth of nearly 1.4 miles (2,300 meters) along the Aleutian Trench. The discovery was found in data collected during the Seascape Alaska 1: Aleutians Deepwater Mapping expedition.
All Topics
All Countries
Any Date
Apply