Climate Central: This winter has offered a rare treat for visitors to Lake Superior’s Apostle Islands: a stroll across the frozen waters to ice caves straight out of a scene in the movie “Frozen.’ Thanks to enduring and massive blasts of frigid air, extensive lake ice has made the caves, normally only accessible to summer visitors traveling by boat, reachable by foot for the first time since 2009.
The bitter weather also has the Great Lakes on the brink of setting a record for the widest ice cover recorded. As…

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