Episode 47

After a massive avalanche in Northern California buried a group of backcountry skiers, Trevor Ault reports on the 8 people who have been found dead, a 9th person who is missing and presumed dead and the six people who were rescued overnight; Gio Benitez has the latest on the unruly passenger who allegedly began to assault people in a plane's cabin shortly after takeoff from Houston; Elizabeth Schulze has details on Meta CEO Mark Zuckerberg's testimony in a landmark trial that accuses Instagram of being designed to be addictive for kids and teens; and more on tonight's broadcast of World News Tonight with David Muir.