Here is a link to a very interesting study by University of MD researchers, who have found (somewhat to their surprise) that reducing air pollution has helped the health of the Chesapeake Bay. bit.ly/1cGABob
The improvement is due to reduced nitrogen pollution emissions in recent years from power plants and also motor vehicles.
This study is a very strong argument for tough new “Tier 3” low-sulfur gasoline and clean-car standards, which would make further significant cuts in nitrogen emissions.
Indeed, to quote our friend, Bill Becker, head of the National Association of Clean Air Agencies:
“Reducing sulfur in gasoline to an average of 10 parts per million will result in overnight reductions in the effectiveness of emission controls on existing cars, yielding a reduction in NOx emissions of 260,000 tons in 2017 when the program takes effect – the equivalent of taking more than 33 million cars off our nation’s roads,” said Becker.
“We know of no other air pollution control strategy that can achieve such substantial, cost-effective and immediate emission reductions as Tier 3.”
Little wonder that we – and a very large coalition of health, environmental, consumer, scientific and business groups as well as state and local agencies – are urging the U.S. to move as quickly as possible to issue final rules so these important emission reductions will actually begin in 2017, as promised.