Cities join the battle on air pollution.

The article presents information on several cities and municipalities in the U.S. that are working to control air pollution. California has passed a legislation that would require factory-installed smog control devices on all automobiles in 1967. For waste disposal, New York is considering to install an incinerator worth 30 million dollars. Montreal has signed contracts for the installation of a municipal incinerator with an electrostatic precipitator.