By Greg Braxton Los Angeles Times (MCT) “Under The Dome” and “Extant,” two of CBS’ marquee summer dramas, have been renewed despite less than winning seasons. “Under The Dome,” based...

By Yvonne Villarreal Los Angeles Times (MCT) LOS ANGELES — CBS has set its summer slate, with return dates for “Big Brother” and Stephen King’s “Under the Dome” announced — among...