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Tundra swans take two distinct paths to Alaska

Tundra swans take two distinct paths to Alaska

Tundra Swan and Cygnets. Images-Craig Ely Skiing to work over a persistent spring snowpack, I looked up to see a large white bird flapping gracefully over the spruce tops. A few gentle honks confirmed it was a tundra swan. After a long winter when all the large birds…

Retreating Yukon Glacier Causes a River to Disappear

Retreating Yukon Glacier Causes a River to Disappear

The massive Kaskawulsh Glacier in northern Canada has retreated about a mile up its valley over the past century. Last spring, its retreat triggered a geologic event at relatively breakneck speed. The toe of ice that was sending meltwater toward the Slims River and then north to the…

Life Returning to Island Destroyed by Eruption

Life Returning to Island Destroyed by Eruption

Nine years after it erupted, Kasatochi Island is just beginning to resemble its neighbors. Kasatochi is a speck in the middle of the Aleutian chain between Dutch Harbor and Adak, about 75 miles east of the latter. The volcanic island had no modern history of erupting until August…

Study Reveals 10,000 Years of Genetic Continuity in Northwest

Study Reveals 10,000 Years of Genetic Continuity in Northwest

CHAMPAIGN, Ill. — A study of the DNA in ancient skeletal remains adds to the evidence that indigenous…

Microbial Colonizers of Arctic Soils are Sensitive to Future Climate Change

Microbial Colonizers of Arctic Soils are Sensitive to Future Climate Change

    A team of researchers from the University of Bristol have recently shown that ecosystems created by…

Squirrels Somehow Predict Seed Bonanza

Squirrels Somehow Predict Seed Bonanza

Stan Boutin has climbed more than 5,000 spruce trees in the last 30 years. He’s fallen only once,…

Arctic Sea Ice Maximum at Record Low for Third Straight Year

Arctic Sea Ice Maximum at Record Low for Third Straight Year

BOULDER, Colo., March 22, 2017—Arctic sea ice was at a record low maximum extent for the third straight…

Are Ravens Responsible for Wolf Packs?

Are Ravens Responsible for Wolf Packs?

People who study animal behavior think they may have found out why wolves hunt in packs — because…

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