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  Sunrise over the Griffith Park Observatory and Los Angeles skyline, California, USA

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  A common wombat at Point Lesueur on Maria Island in Tasmania, Australia

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  View of cultivated fields from Serra do Cume, Terceira, Azores, Portugal

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  Hạ Long Bay limestone pillars, Quảng Ninh Province, Vietnam

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  View of Torres del Paine mountains against sky in winter, Puerto Natales, Patagonia, Chile

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  Liquid nitrogen for National Chemistry Week, which runs October 21-27

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  Closeup of a butterfly on a lavender flower, Hungary

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  Art installation above the Piazza del Duomo in Amalfi, Italy

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  Château Gaillard, a 12th-century fortress in the Seine Valley, France

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  Tombstone, Arizona, on the anniversary of the gunfight at the O.K. Corral

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  Endla bog in Endla Nature Reserve, Jogeva, Estonia

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  A corn maze in Petaluma, California

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  A statue in the Gardens of Versailles in France

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  Ancient village Ait Benhaddou set in hill at sunset, Morocco

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  A pumpkin patch in Columbia County, Pennsylvania