The warning comes as Arctic air is expected to push temperatures well below zero across Minnesota.
Think "exploding trees" sound like sci-fi? As a polar vortex hits the U.S., here's some of the science behind this loud, "gunshot-like" phenomenon.
Exploding trees are trending as extreme cold grips winter regions. Experts explain what's real, what's exaggerated, and the actual risks during deep freezes.
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