David Jason Muir (born November 8, 1973) is an American journalist and the anchor of ABC World News Tonight and co-anchor of the ABC news magazine 20/20, part of the news department of the ABC broadcast-television network, based in New York City. Muir previously served as the weekend anchor for the flagship ABC News broadcast ABC World News Tonight. Muir formerly acted as principal substitute for World News with Diane Sawyer on weeknights, and then succeeded Sawyer in the anchor chair on Monday, September 1, 2014. At ABC News, Muir has won multiple Emmy and Edward R. Murrow awards for his national and international journalism. Wikipedia
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