8/11: Romney picks Paul Ryan as VP nominee; Texas farmers praying for rain

      |Despite being the favorite of conservatives urging Romney to go bold, Congressman Paul Ryan's VP nomination still came as a surprise. And as Jan Crawford reports, it's one that instantly resets the presidential race; And, high temperatures continue to batter Texas, prolonging a drought that is putting the livelihood of lifelong farmers and ranchers at risk. Manuel Bojorquez visits with struggling ranchers in Sulfur Springs.