Toxic gases connected to Ohio train derailment cause concern

Days after crews released and burned toxic chemicals transported by a wrecked train in Ohio, residents remain concerned about the toxic substances that could be lingering in their evacuated neighborhoods.About 50 cars, including 10 carrying hazardous materials, derailed in a fiery crash Friday in East Palestine, according to rail operator Norfolk Southern and the National Transportation Safety Board. Vinyl chloride was slowly released into the air Monday from five of those cars before crews igni