Or, rock vs. hard place: Catalytic converters break down nitrogen and oxygen in car exhaust, and the much cleaner air we see in America's dirtiest cities attests to their effectiveness. But wait: A byproduct of the process is loads of nitrous oxide -- up to half the nitrous oxide implicated as a key cause of global warming, in fact. All this from an EPA study that The New York Times got hold of.
Smog vs. Warming
Or, rock vs. hard place: Catalytic converters break down nitrogen and oxygen in car exhaust, and the much cleaner air we see in America's dirtiest cities attests to their effectiveness. But wait: A byproduct of the process is loads of nitrous oxide -- up to half the nitrous oxide implicated as a key cause of global warming, in fact. All this from an EPA study that The New York Times got hold of.
