Tier 3 Rules

In EPA’s leadership blog, Administrator Gina McCarthy announces the agency's new standards to reduce the sulfur content in gasoline by 60% in 2017 and new Tier 3 emission standards for cars and light trucks to reduce criteria and toxic air pollutants
Mar 5, 2014   EPA Connect
The EPA's newly proposed rules to reduce sulfur in gasoline may have the perverse effect of making alternative vehicles, that is, those that don't run on gasoline, less competitive with conventional vehicles and ensure that we remain addicted to oil.
Apr 8, 2013   The New York Times - Energy & Environment