Emergency workers search for injured passengers after an Amtrak train carrying more than 230 people from Washington, D.C., to New York derailed in Philadelphia in May 2015. Mark Makela/Getty Images hide caption

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Reporting from a Seoul cat cafe, one of the many themed cafes in Japan and Korea. Haeryun Kang/for NPR hide caption

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Reporter's Notebook: Settling In In Seoul

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Twitter changed its "favorite" star icon to a "like" heart icon prompting largely negative responses from Twitter users. But is it the heart they hate? Or the change itself? Screenshot by NPR hide caption

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