Heat Advisoryargues that global warming will cause increases in future ozone smog levels, because warmer temperatures favor ozone formation, but thissmog claim is bogus.

Activists continue to present misleading accounts of air quality issues despite the decline of ozone smog levels.

During the last thirty years,most of the country has had several years that were cooler or wetter than 2004, but never have smog levels been anywhere near this low.

Are greenhouse gases a cause for concern?

Acloser look at the data reveals that high ozone levels are found to be occurring on weekends, when emissions of nitrogen oxides are often 40 percent lower than weekdays.

It's no surprise that the Sierra Club fails to discuss positive air pollution trends and the problems with its policy prescriptions, and ignores people's lifestyle preferences.

We still have a long way to go before activists' and journalists' claims match air quality reality.

Despite improvements in air quality throughout the twentieth century, most Americans believe we have made no progress on air pollution--or even that air pollution has been getting worse.