Lee Goldberg tracks the first major Arctic blast of the season that’s sweeping east, temperatures quickly plummeting on Monday and Tuesday. The South could see record-low temperatures, and wind chills in the Northeast could feel like 20s. https://abcnews.go.com/alerts/Weather | ABC World News Tonight with David Muir

The world’s tallest teenager has taken his talents to the college basketball court. Nineteen-year-old Olivier Rioux, standing at 7 feet, 9 inches, suited up with the Florida Gators as a center on Thursday. Whit Johnson reports. | ABC World News Tonight with David Muir