USA Today: High temperatures brought sweaty discomfort to much of the Southwest on Sunday with no break in the sizzling temperatures likely until Tuesday. The thermometer reached 117 in Las Vegas. Triple-digit temperatures were recorded n the valleys and desert regions of Southern California, while metropolitan Phoenix saw just a slight drop in temperatures after experiencing record-breaking heat a day earlier. In Pasadena, Calif., six half-marathon runners were hospitalized Sunday for heat-related illnesses....