Comedian and actor Chris Rock returns to host the Academy Awards for the second time. Tune into World News Tonight with David Muir weeknights at 6:30 | 5:30c on ABC for breaking news, world reports, Made In America segments and other extraordinary stories. Watch more stories from World News Tonight with David Muir here: abcnews.go.com/WN Follow anchor David Muir across digital platforms— Facebook: www.facebook.com/davidmuirabc?fref=ts Twitter: twitter.com/davidmuir Instagram: instagram.com/davidmuirabc Follow World News Tonight— Facebook: www.facebook.com/WorldNewsTonight Twitter: twitter.com/wntonight Instagram: instagram.com/abcworldnewstonight/"