We may receive an affiliate commission from anything you buy from this article. In "The New Tourist: Waking Up to the Power and Perils of Travel" (available in Trade Paperback May 13 from Scribner), journalist Paige McClanahan writes about how tourism shapes societies and individuals, and about the need to redefine the meaning of "tourist" in today's shrinking world. Read an excerpt below, and don't miss Seth Doane's interview with Paige McClanahan on "CBS Sunday Morning" May 3! "The New