ON THIS DAY: ABC News premieres "World News Tonight" on July 10, 1978 – 40 years ago – featuring Peter Jennings, Max Robinson, Barbara Walters and Frank Reynolds. https://abcn.ws/1c6SfMC | ABC World News Tonight with David Muir

12K views · 61 reactions | ON THIS DAY: David Brinkley and Peter Jennings report for ABC News on April 18, 1983, from Beirut, Lebanon, after a suicide bombing by Islamic extremists killed 63 people, including 17 Americans, at the U.S. Embassy. https://abcn.ws/2qGXvqu | ABC World News Tonight with David Muir | Facebook

133K views · 2.1K reactions | REMEMBERING AN ICON: World News Tonight anchor Peter Jennings died on this day in 2005. He would have turned 80 this year. In 2015, David Muir highlights his memorable moments in broadcast and how his life changing legacy continues. #PersonoftheWeek https://abcn.ws/2OOjBBU | ABC World News Tonight with David Muir | Facebook

As a major arctic blast makes its way into the Northeast, 60 million are under alerts – including an extreme cold watch for New York City, Philadelphia and DC, where wind chills are expected to dive below zero. Lee Goldberg has the track. https://abcnews.link/PJQ0rre | ABC World News Tonight with David Muir