October 8, 2015 3:40 pm San Francisco's Growing Pains You know the gold rush transformed San Francisco into a bustling boom town in just a few short years. But did you know the solution for traveling over the city’s steep hills was found in a gold mine? 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
