CLEAN AIR RALLY--Ken Johnsen, of Worthington, takes part in a We Want Clean Air rally, at the Ohio Statehouse, in Columbus, Ohio, on Tuesday, April 20, 2004. The event, sponsored by the Sierra Club, was held in conjunction with the release of a report titled Ohio Communities at Risk. (Jack Kustron/Photoj.com)

CLEAN AIR RALLY--Holly Church Wendell, of Westerville, holds her four-year old grandson Anthony Mills, during a We Want Clean Air rally, at the Ohio Statehouse, in Columbus, Ohio, on Tuesday, April 20, 2004. The event, sponsored by the Sierra Club, was held in conjunction with the release of a report titled Ohio Communities at Risk. (Jack Kustron/Photoj.com)

CLEAN AIR RALLY--Bryan Clark, regional conservation organizer for the Sierra Club, gestures as he speaks during a We Want Clean Air rally, at the Ohio Statehouse, in Columbus, Ohio, on Tuesday, April 20, 2004. The event, sponsored by the Sierra Club, was held in conjunction with the release of a report titled Ohio Communities at Risk. (Jack Kustron/Photoj.com)

CLEAN AIR RALLY--Members of the Sierra Club attend a We Want Clean Air rally, at the Ohio Statehouse, in Columbus, Ohio, on Tuesday, April 20, 2004. The event was held in conjunction with the release of a report titled Ohio Communities at Risk. (Jack Kustron/Photoj.com)