The Philadelphia Inquirer wrapped up a four-day investigative series into decision-making at the EPA with an in-depth story on the setting of the National Ambient Air Quality Standards. This story, part of the "Smoke and Mirrors" series, examines recent EPA decisions on air quality standards for particulate matter, ozone, and lead. It offers some interesting insights into how White House pressure has interfered with setting strong air quality standards that follow the recommendations of EPA's scientific advisors. The story is available online.