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Live updates: Winter storm Fern sweeps US with power outages, treacherous roads, flight cancellations

Follow here all day for up-to-the-minute information about every angle of this winter storm.
The Debrief

An Icy Mystery Has Puzzled Scientists for Decades—This Researcher May Have the Solution

A Spanish scientist believes he has finally solved a longstanding mystery about ice that causes the different shapes ice crystals form.