US-Russia missile sabre-rattling in the Arctic sends threatening political messages but the bigger threat is its lasting environmental damage.
The world’s largest island has long been on the mind of successive American leaders who have been interested in its strategic and economic value.
At current levels of greenhouse gas emissions, earth could pass the 1.5 C marker as early as 2030, and no later than mid-century, the Intergovernmental Panel for Climate Change reports with "high confidence".
A man in his 40's suffered head injuries after he was attacked by a polar bear but there has been outrage on social media against the killing of the animal.
There was slightly less warming in many measurements than a record hot 2016, but scientists remain concerned because the far northern region is warming twice as fast as the rest of the globe.
The trend of shrinking ice around the North Pole in recent decades has been one of the starkest signs of climate change, experts say.
China benefits from global warming, ships will use Arctic Ocean route to cut travel time between Atlantic and Pacific
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