for example burning natural gas creates much
less SO2 than burning coal. Certain approaches will also have additional
benefits of reducing other pollutants such as mercury and carbon dioxide.
Understanding these co-benefits has become important in seeking costeffective
air pollution reduction strategies. Finally, power plants can use
technologies that don't burn fossil fuels. But each of these options has its own
costs and benefits. Similar to scrubbers on power plants, catalytic converters
reduce NOx emissions from cars.