Bundled up against the cold in downtown Chicago, Sunday, Jan. 27, 2019. AP Photo/Nam Y. Huh

How frigid polar vortex blasts are connected to global warming

Life-threatening cold temperatures in the central US are caused by changes in wind circulation in the Arctic that bring cold air south. Climate change could make these events more frequent.
Why is the eastern US getting so much Arctic weather this winter? Stuart Rankin/Flickr

A melting Arctic and weird weather: the plot thickens

Everyone loves to talk about the weather, and this winter Mother Nature has served up a feast to chew on. Few parts of the US have been spared her wrath. Severe drought and abnormally warm conditions continue…

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