Henry Waxman (D-CA), the chairman of the House Oversight Committee, has vowed to investigate EPA's decision to prohibit states from regulating greenhouse emissions.

EPA has proposed exempting farms from a law protecting the public from toxic air pollutants. Environmental groups have objected.

EPA is required to update its standard for each of the six main "criteria" air pollutants every five years.

Scientists advising the U.S. Environmental Protection Agency on air pollution issues are criticizing EPA higher-ups for ignoring their scientific counsel. Specifically, they are accusing the Bush Administration of excising science from the process the agency uses to determine how clean the air we breathe should be. The Clean Air Scientific Advisory Committee (CASAC) challenges EPA administrator Stephen L. Johnson.

EPA is expected to release its proposed new standard for ground level ozone by June 20, 2007.

As the summer smog season begins, several sources can help you provide better coverage of this serious health and environmental issue.

Many cities are embarking on coordinated programs designed to significantly increase their tree cover, in order to address issues such as aesthetics, energy use, carbon sequestration, air quality, and stormwater runoff.

On March 29, 2007, EPA finalized the Clean Air Fine Particle Implementation Rule.

A report on the environmental pros and cons of wind power is scheduled to be released April 25, 2007, by the National Academies National Research Council.

Although acknowledging that their calculations are not comprehensive, an advocacy group has concluded that at least 18 states, and possibly 14 others, are significantly undercollecting fees for permitted air pollution.