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A beluga whale named Petrovich basks in sunlight bursting through ice at the Utrish dolphinarium in Utrish, Russia. (Viktor Lyagushkin / Barcroft Media)

A beluga whale named Petrovich basks in sunlight bursting through ice at the Utrish dolphinarium in Utrish, Russia. (Viktor Lyagushkin / Barcroft Media)

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Freemont Street, Las Vegas 1982 by Harry Gruyaert

Freemont Street, Las Vegas 1982 by Harry Gruyaert

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Housing unit, Marseille (Le Corbusier) 1949-52 by Lucien Hervé

Housing unit, Marseille (Le Corbusier) 1949-52 by Lucien Hervé

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Harmony, Prague 1952* by Eva Fuka

Harmony, Prague 1952* by Eva Fuka

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Aspens, Northern New Mexico, 1958 by Ansel Adams

Aspens, Northern New Mexico, 1958 by Ansel Adams

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Mary and Pablo, N.Y.C. Feb. 1952* by Robert Frank

Mary and Pablo, N.Y.C. Feb. 1952* by Robert Frank

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Easter Snow, 1915 by George Bellows

Easter Snow, 1915 by George Bellows

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Ultraviolet light treatment for children with rickets in a south London hospital, c.1935 by Edith Tudor-Hart

Ultraviolet light treatment for children with rickets in a south London hospital, c.1935 by Edith Tudor-Hart

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Afterimage #5 (Orange Cast), 2008 by Mikko Sinervo
(New Wave Finland)

Afterimage #5 (Orange Cast), 2008 by Mikko Sinervo

(New Wave Finland)

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Venezuela, 2007 by Christopher Anderson

Venezuela, 2007 by Christopher Anderson