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Cold weather makes for good pictures as temperatures plummet

Andrew Vaughan / Canadian Press via AP

A ferry and tugboat cross the harbor in Halifax, Nova Scotia, on Monday, Jan. 24. Fog occurs when very cold air drifts across relatively warm water.

Toby Talbot / AP

A frost-covered horse stands in a pasture in Calais, Vt., on Monday, Jan. 24. Cold temperatures prompted schools around the Northeast to delay openings and some canceled classes altogether.

Richard Hertzler / Lancaster Intelligencer via AP

A pedestrian stops to admire ice that formed on a fountain at Penn Square in Lancaster, Penn., on Monday.

Bill Sikes / AP

Fog rises off a pond in Marlborough, Mass., on Monday as ducks swim at sunrise.