Warming Arctic linked to extreme cold, heavy snow in U.S., study finds

Science of Snow National Snow and Ice Data Center

Arctic sea ice nears all-time record wintertime low

Why it is so cold in the polar regions « World Ocean Review

Understanding the Arctic polar vortex

Cold for the holidays: Blast of frigid, Arctic air to affect most

Q&A: How is Arctic warming linked to the 'polar vortex' and other

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Arctic ice melt 'already affecting weather patterns where you live

Researchers correlate Arctic warming to extreme winter weather in

Melting Arctic ice will have catastrophic effects on the world