David Muir - Biography and Images

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David Muir is presenter of World News and a correspondent for ABC News based in New York.

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Dr. Timothy Johnson is the current medical editor/contributor for ABC News. He provides on-air medical ABC’s World News Tonight, Nightline and 20/20. He also appears on Good Morning America. Johnson is on the faculty of Harvard Medical School and on… Read more

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Steve Osunsami is an correspondent for ABC News based in Atlanta. He contributes reports to “World News with Charles Gibson” and other ABC News broadcasts and platforms. Osunsami began his network career at ABC News in April 1997, as a… Read more

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Ron Claiborne is the news anchor for ABC News’ weekend edition of Good Morning America. Claiborne came to ABC News in 1986 and has been a general assignment correspondent based in Boston, reporting for World News Tonight, Nightline and Good… Read more