September 3, 2015 6:15 pm ‘The Joker' Roller Coaster Coming to Six Flags Discovery Kingdom Weak stomachs not welcome. That’s the warning about a new ride at Six Flags Discovery Kingdom. US & World Videos 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl 2:59 Keep these travel etiquette tips in mind this holiday season 2:20 Bodies of Missing Men Found in Rubber Bins Inside Storage Unit 1:42 Hundreds of Golden Retrievers Walk a Mile for the Official Boston Marathon Dog 1:51 Typewriter Shop Owner Receives Gift From Tom Hanks