Safety advocates have been pressuring Canadian and U.S. officials to create new safety standards for tank cars and to make old DOT-111s like this one more puncture-resistant. Nati Harnik/AP hide caption

itoggle caption Nati Harnik/AP

The view inside Wrigley Field during a 1959 Cubs game. The stadium was built in 1914 and celebrates its centennial this year. AP hide caption

itoggle caption AP