Air

Hot on the heels of the announcement of EPA's controversial revised ground-level ozone standard, the agency is required by court order to release its proposal for a revised airborne lead standard no later than May 1, 2008. A final rule is required by Sept. 1, 2008.

Ocean-going ships are a major unregulated air pollution source.

EPA reviews its health-based standard for NO₂ as an air pollutant, and has issued a science assessment of health effects.