A cashier bags groceries in plastic bags on June 2, 2010 in San Francisco, before a plastic bag ban took effect there.
This week, a bill that would ban disposable plastic bags statewide goes to the state Senate floor for a vote. With 54 local ordinances already banning bags in 75 cities and counties, why do we need a statewide ban? We talk with the measure's author, Senator Alex Padilla of Los Angeles County. Reporter: Rachael Myrow