Last Updated: Wednesday, January 8, 2014, 18:35
The bitter chill gripping North America is a result of Arctic air that has spilled southwards, and global warming may be a cause.
Last Updated: Wednesday, January 8, 2014, 18:18
The brutal chill came as people in the Great Lakes region were still digging out from two massive snow storms which dumped more than two feet of snow.
Last Updated: Wednesday, January 8, 2014, 13:44
The deep freeze that has paralysed life in North America and left hundreds of residents here shivering for days is fast loosening its icy grip.
Last Updated: Wednesday, January 8, 2014, 02:30
A deadly blast of arctic air shattered decades-old temperature records as it enveloped the eastern United States on Tuesday, snarling air, road and rail travel, driving energy prices higher and overwhelming shelters for homeless people.
Last Updated: Tuesday, January 7, 2014, 09:12
The bitter chill gripping North America is a result of Arctic air that has spilled southwards, and global warming may be a cause, an expert said on Monday.
Last Updated: Tuesday, March 26, 2013, 10:36
Venus` South Polar Vortex has a much more chaotic and unpredictable nature than previously thought, a new study has found.
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