Trump, Greenland and the Arctic
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Arctic blast hits Texas with freezing temps Sat.
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The debate around the Arctic is becoming hotter than ever as US President Donald Trump insists Greenland should become part of the United States. Security, shipping routes and mineral wealth are all in the mix.
A conveyor belt of ocean water that loops the planet and regulates global temperatures could be heading for a tipping point.
President Donald Trump wants to buy Greenland as he says it is the only way for the United States to secure its defence.
Canada has been boosting its forces in the Arctic in the face of new threats - and US concerns.
An unusually brutal winter storm is set to pummel more than 160 million Americans from Friday, as a stretched "polar vortex" sends a devastating blast of Arctic air, bringing heavy snows and freezing rains.
Live Science on MSN
An ocean the size of the Arctic once covered half of Mars, new images hint
Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.
Forecasters are warning of a sprawling winter storm that's predicted to spread a mess of ice and snow over a 2,000 mile stretch of the nation.
Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all scientists agree.