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Air currents driving global weather shift

Study suggests an increase in temperatures in the Arctic is to blame for harsh winters across the northern hemisphere.

Last updated: 19 Feb 2014 07:33
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For people wanting to know why the weather has seemed so bad for so long, scientists may have the answer.

They say the wind current known as the jet stream is to blame.

Al Jazeera's Cath Turner reports from New York.

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Al Jazeera
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