Baltimore Mayor Martin O’Malley and some four dozen other U.S. mayors are urging the federal government to require railroads to inform local governments of plans to transport hazardous materials through their cities. In a letter to outgoing Department of Homeland Security Secretary Tom Ridge, the mayors cited this month’s Norfolk Southern train derailment in South Carolina, which led to the rupture of a tank car carrying chlorine. Nine people were killed and about 250 injured by the release of the toxic chlorine cloud in the small town of Graniteville. Full Story