Denmark makes a claim to contested, energy-rich territory around the North Pole by submitting data to the UN which it says demonstrates the area is an extension of its continental shelf.
Arctic sea ice decline has doubled the chances of an extreme cold winter over Europe and Asia.
New images from NASA's Earth Observatory reveal the turquoise melt ponds in the Arctic that form every summer.
In 1947, a crash landing left wreckage from a U.S. Army plane frozen in time on northwest Greenland's remote ice sheets.
If melting ice caps trigger rapid sea level rise, the strain that the edges of continents could experience might set off underwater landslides.
Grasses are taking advantage of the warming Antarctic climate. Are weeds next?
Berlin's beloved polar bear 'Knut' had a massive leg spasm and died Saturday morning, the cause is still undetermined.