Las Vegas, Nevada, is a blessing and a bet. Once a simple railroad stop with its underground springs and “meadows,” as its name means, the city sits at the intersection of America’s great deserts and west of one of this nation’s greatest natural wonders: the Grand Canyon. During the Great Depression and the construction of the Hoover Dam, Las Vegas decided to allow and profit from gambling and other sins. And it has not looked back much since . . . until now.