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Centenarian Manohar Aich sits at his home in Kolkata, India. Aich stood 4 feet 11 inches at his tallest, earning him the nickname "Pocket Hercules." Bishan Samaddar hide caption

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Kate Musick (left) taught Harlee Patrick in elementary school in Gloucester, Va. StoryCorps hide caption

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Gerardus Mercator's maps gave us a truer view of our world and the means to explore it. Library of Congress hide caption

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Monica Youn visits NPR headquarters in Washington on Friday. Doriane Raiman/NPR hide caption

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