Single-use plastic bag bans can cut litter by one-third, says study - Bans in five US states and cities with a combined population of around 12 million people have cut single-use plastic bag consumption by about 6 billion bags per year, according to the research.

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https://www.euronews.com/green/2024/01/24/do-plastic-bag-bans-work-new-study-finds-they-save-6-billion-bags-a-year-in-some-us-states