Most of Greenland is covered by Arctic ice.
AP Photo/John McConnico
In 1867, the US bought Alaska from Tsar Alexander II for a tidy sum of $7.2 million. Trump probably wouldn't be able to get that kind of bargain for Greenland.
An old male reindeer weathers a heavy snow storm.
The winter of 2018-19 claimed 200 reindeer in Svalbard, Norway, according to a recent census.
Field camp on the East Antarctic ice sheet.
Some 58 metres of sea level rise is locked up in Antartica's ice sheets, and it's melting faster than expected.
Melting on top of sea ice off northwestern Greenland, June 2019.
Steffen M. Olsen/Twitter
Greenland's ice made headlines in June, as warm weather made for unseasonably widespread melting. And though this summer is still unfolding, the human fingerprint on Greenland's ice can't be denied.
outdoorsman / shutterstock
Algae at the bottom of the Arctic food chain relies on sea ice.
A scientist explains how global warming is affecting the entire world – from the mountains, to the sea.
A map showing Northern Canada and the Arctic Ocean.
Government of Canada
In May 2019, Canada made a partial submission to the United Nations on the limits of its extended continental shelf in the Arctic.
An array of leaves showing the diversity of kelp in underwater Arctic forests.
With global warming, underwater Arctic kelp forests are proliferating, and might be a potential resource.
The Mackenzie River carves its way through the permafrost tundra of northern Canada.
inEthos Design / shutterstock
Climate change has caused a 60-fold increase in active landslides on one Canadian Arctic island.
Svalbard archipelago, Norway.
Antibiotic resistance is common in bacteria where there's a large human population and poor sanitation. For the first time however, it's been found in the remote Arctic.
All too often the Arctic region is portrayed as an area on the cusp of military invasion. This is an easy narrative to sell. But is there really a new Cold War coming?
Yana Mavlyutova / shutterstock
Much of our scientific knowledge comes from just two regions in Alaska and Sweden.
Russian troops during a 2017 winter warfare exercise.
New trade routes and a wealth of natural resources are becoming increasingly available – and everyone wants a part of them.
Extreme climatic events are harming plant communities in the Arctic. The resulting colour change is bad news for the region's carbon storage.
A pod of narwhals (
Monodon monoceros) in central Baffin Bay. Narwhals are the most vulnerable animals to increased ship traffic in the Arctic Ocean.
Kristin Laidre/University of Washington
Climate change is shrinking Arctic sea ice and opening the region to ship traffic. Whales, seals and other marine mammals could be at risk unless nations adopt rules to protect them.
Bombarding people with scientific information has little effect. Something else is needed to jolt us out of our current climate trajectory.
2016’s warm winter meant not enough snow for the start of the Iditarod sled dog race in Anchorage, so it was brought by train from 360 miles north.
For everyone from traditional hunters to the military, the National Park Service to the oil industry, climate change is the new reality in Alaska. Government, residents and businesses are all trying to adapt.
Animals in the western Arctic have higher levels of mercury in their bodies than those in the eastern Arctic.
A new study demystifies regional differences in mercury levels in marine animals in the Canadian Arctic.
The Canadian Coast Guard icebreaker Louis S. St-Laurent sails past a iceberg in Lancaster Sound in 2008.
THE CANADIAN PRESS/Jonathan Hayward
New shipping opportunities are opening up in the Arctic as sea ice continues to recede. But travel is still dangerous and the region isn't equipped to deal with more vessel traffic.
Since 2005, the Barents Sea has become too warm for sea ice to exist south of the Polar Front.