Retrofitting School Buses Leads to Large Cuts in Particulate Emissions Accordingly, the Texas school districts can install pollution control devices on diesel school buses. (treehugger.com)
Air pollution control devices called scrubbers use a sprayed slurry of ground limestone and water to remove sulfur dioxide from gases formed in coal combustion, said Tom Schmaltz, environmental director for Headwaters Resources, a world leader in coal combustion products. (scientificamerican.com)
While others around me, including my father, are against pollution control devices on motor vehicles because they «steal power» from the engine, I've always supported them. (climate-skeptic.com)