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...

This report emphasizes one way that regulations following from the CAA directly influences individuals‟ behavior: through the Inspection and Maintenance (I&M) programs.

Taiwan doesn't just need upgrades to its existing F-16s; it needs new fighters as well. Quantity and quality are both needed if Taiwan is to have a fighting chance in defending itself or, at least, holding off the Chinese until American help arrives.

Air Quality in America rebuts mistaken perceptions that U.S. air quality is bad by documenting marked improvements over the past decades.

It's always painful to take on the myths and ideological narratives of the left. The pundits of the liberal (excuse me, "progressive") media make a pretense of listening to reason, but when their views are challenged, they become abusive.

The United States has achieved striking improvements in air quality during the last few decades.

Secretary Arne Duncan, who argues that policymakers should use "data to drive reform," strongly believes that education policy should be "framed by evidence." We agree.

Air pollution affects far fewer people, far less often, and with far less severity than suggested by media and activist reports.