Local authorities are urging residents to take some simple steps to combat an ongoing problem with catalytic converter thefts. Greensboro Crime Stoppers is looking for information on a series of thefts. Between October and March, thieves stole more than 300 catalytic converters in the city, the organization says. The devices reduce toxic gases from automobile emissions. Crime Stoppers notes they’re relatively easy to remove and have no identifying markings that would make them more traceable.