Can you spot all of the differences in the pictures?
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A new exhibition examines the more than 1,000 resorts and hotels that dotted New York's Catskills Mountains and provided relaxation, dancing and laughs
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Never-before-seen photos and videos shed new light on the pivotal World War II conflict
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Visitors have been getting too close to the marine mammals—taking selfies and even harassing them—as they rear their pups
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In 1873, greed, speculation and overinvestment in railroads sparked a financial crisis that sank the U.S. into more than five years of misery
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Scientists find we are “well outside the safe operating space for humanity” in a new study meant to assess the health of our planet
