A new report lists the most polluted areas in the country , including several major cities . # ##off : There are too many cars and trucks , oil , and industrial facilities . He says Los Angeles , for example , needs to massively expand its public transit system . Pettit : But compared to other states and to the Federal Clean Air Act health standards , California is way behind on cleaning up its air pollution . California needs to accelerate development of clean , renewable energy .
A new report lists the most polluted areas in the country , including several major cities . # ##off : There are too many cars and trucks , oil , and industrial facilities . He says Los Angeles , for example , needs to massively expand its public transit system . Pettit : California needs to accelerate development of clean , renewable energy .