Less Pollution: More Smog
Officials in cities across the U.S. are trying to figure out how to get cleaner air. They’ve discovered that when auto exhaust levels go down on weekends, ozone?the main ingredient of smog?increases. They’re worried that as air pollution from car exhaust decreases with the introduction of new, lower-emissions cars, smog levels will climb even higher.
Researchers Robert Harley and Douglas Lawson are studying this “weekend effect.” In abcnews.com, Amanda Onion quotes Harley as saying, “Atmosphere chemistry is different wherever you are. But I don’t think you can dismiss this effect. It has been spreading to other cities.”
Lawson says, “It seems counterintuitive, but it’s true. And it’s a double whammy because people spend more time outside on the weekends.” read more