Environmentalists in Mexico are taking lessons from U.S. greenies and are filing more lawsuits and using right-to-know laws to force government agencies to make public the poor environmental records of some companies. Carla Garcia, an enviro attorney in Tijuana, said, “There is a change in the way things are being done. It’s not just about going up and throwing trash in front of the municipal building. It’s about learning about the law.” About 400 environmentalists who work along the 2,000-mile U.S.-Mexico border met for three days in Tijuana at the end of last week to talk shop.