Quick: How many kinds of gasoline do we use in America? Most people would say three or six: regular unleaded, mid-grade, and premium, along with the ethanol blends of the same that have become nearly universal. The actual number is somewhere above 45, though hard to pin down exactly, according...

Current ozone standards are stringent enough to protect Americans' health.

Both my own research and reading in the literature suggests that EPA has serious problems in the way it employs scientific information when it assesses both the potential benefits, and potential costs of existing and proposed public policies.

Visiting scholar Joel Schwartz available for comment on the State of the Air 2007 report.

Air pollution is at a historic low and affects far fewer people, far less often, and with far less severity than activists care to admit.

The findings in Digging Up Trouble by the Union of Concerned Scientists are unreliable and based on flawed methodology and analysis.

CARB's new ozone standard will cause net harm to Californians.

This annual report highlights significant environmental developments and milestones in the United States and worldwide.