 Las Vegas is famous for its nightlife, and you'll see young people cavorting all over the strip. But our population is aging, and they aren't going quietly into the night. Seniors also want to have fun. I'm Joe Shaineman. Nightlife. Live from NPR News in New York City, I'm Duahli Saikautau. A new British Prime Minister, Keir Starmer, took power today, hours after his center-left Labour Party won a landslide election.