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Associated Press
This Jan. 30, 2016 photo provided by The Nature Conservancy shows a rare weather event that caused the spontaneous snowballs at The Nature Conservancy’s Silver Creek Preserve and surrounding fields near the tiny town of Picabo, Idaho. The National Weather Service says snow rollers are caused by an unusual combination of snowfall around a couple inches with the right water density and temperatures near freezing followed by strong winds. (Sunny Healey/The Nature Conservancy via AP)

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