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Published at 640 × 427 in California’s plastic bag ban may be aiding an increase in the greenhouse gas ethane

HACIENDA HEIGHTS, CA. – JULY 22, 2011: Roger Blanco heads to his car with his groceries as customers and grocers at Albertson’s in Hacienda Heights are adjusting to the plastic bag ban that went into effect on July 1 in unincorporated areas of Los Angeles County. (Anne Cusack /Los Angeles Times)