Six Greenpeace activists charged with causing criminal damage after a protest are not "unthinking vandals", a judge says.

Liz Kalaugher reports from the High Arctic as she travels aboard the Amundsen, a Canadian Coast Guard vessel. She has joined an expedition investigating the effects of climate change off Banks Island.

Global warming is causing much concern in Greenland, but as James Painter discovers, higher temperatures are bringing some benefits to the sub-Arctic south of the island.

A delegation of Inuit travel to Washington to argue that the nation's climate policy violates human rights.

The largest polar research programme for 50 years, by thousands of scientists, gets under way this week.

While the rest of the world argues about climate change, Alaskan natives are having to deal with the consequences.

The Arctic may be free of all summer ice by as early as 2040, new data from scientists suggests.

An oarsman's second bid to become the first to row solo round Antarctica ends in failure.

The UK's largest map of the stars that are permanently visible in the night sky opens.

A 47-year-old father of seven is preparing for the first solo circumnavigation of Antarctica in a rowing boat.

Arctic peoples are filing a legal petition alleging US policy on climate change violates their human rights.

A 47-year-old oarsman plans to spend 10 months circumnavigating Antarctica in a rowing boat.

Communities of creatures living in Arctic lakes are undergoing dramatic changes in response to global warming, warn Canadian experts.

The UN's decade for indigenous people has ended with mixed results, campaigners say.

Arctic indigenous people urge the US to cut gas emissions to slow down the thaw of the polar ice.

The indigenous peoples of the Arctic are told their culture will be threatened by climate warming.

The Arctic is undergoing rapid and possibly irreversible climate change, says a major report.

Researchers preparing to survey the wealth of life in the Arctic Ocean expect to find some species new to science.

Atlantic oarsman John Ridgway reaches the half-way point of his global voyage to highlight the plight of the albatross.

The Arctic Inuit people say their human rights are being abused by countries who do not curb greenhouse gas emissions.