Paper or plastic grocery bags - which are better for the environment? Well, um, neither : National-World : Albuquerque Tribune: "someone using plastic grocery bags for a year would go through 520 bags and generate 6.08 kilograms of greenhouse gases, which contribute to global warming. Someone using paper bags would go through 520 bags to generate 11.8 kilograms of greenhouse gases.
But a year's worth of reusable polypropylene bags - estimated at four bags, used twice a week - would generate less than 2 kilograms of greenhouse gases.
'The best thing is for people to be encouraged to take reusable bags,' Hershkowitz said. 'That's a truism everyone can agree upon.'"
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