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Actress Tilda Swinton sleeps in glass box for art

Richard Drew / AP

Actress Tilda Swinton performs the art of sleeping in her one-person piece called "The Maybe," in New York's Museum of Modern Art,  Monday, March 25, 2013. In "The Maybe," first performed at the Serpentine Gallery in London in 1995, Swinton lies sleeping in a glass box for the day. The exhibit will move locations within the museum every time Swinton performs. Read the full story.

A piece of performance art at the New York Museum of Modern Art called 'The Maybe,' featured Oscar winning actress Tilda Swinton resting in an elevated glass box. NBC's Brian Williams reports

Richard Drew / AP