Smog would be much worse were it not for the catalytic converter, invented by a Caltech professor. If I read the article correctly, though, this mechanism woul

Smog would be much worse were it not for the catalytic converter, invented by a Caltech professor. If I read the article correctly, though, this mechanism would not account for the formation of smog in Los Angeles in the summer, when temperatures never drop to 41 deg F.