Watch special, comprehensive coverage of the papal conclave and installation of the new pope from the Vatican beginning ...

His tribute this year was penned by none other than Diane Sawyer, a close friend of David's, veteran ABC News journalist, and his predecessor on World News Tonight, hosting the show from 2009-2014.

Tom Llamas brought NBC Nightly News a rare ratings victory over ABC World News Tonight with David Muir on Thursday (April 17), beating the usually number one broadcast by 19,000 viewers in the key ...

NEW YORK -- David Muir, the anchor and managing editor of America's most-watched newscast "ABC's World News Tonight with David Muir" and co-anchor of news magazine "20/20," has been named one of ...