How global warming can make cold snaps even worse

As the record-setting cold spreads across the US, brace yourself for this conversation:

Your friend: “Sure is cold outside, amirite? Minneapolis is as cold as Mars right now. Crazy, huh? So much for that whole global warming thing, eh?”

You: “Well…”

In fact, global warming is probably contributing to the record cold, as counter-intuitive as that may seem. The key factor is a feedback mechanism of climate change known as Arctic amplification. Here’s how to explain the nuts and bolts of it to your under-informed family and friends:

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