https://www.bbc.com/news/uk-49044422

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Discarded cigarette butts can hamper plant growth, new research suggests. The study, led by Anglia Ruskin University, found the presence of butts in soil reduced the germination success and shoot length of clover by 27% and 28% respectively. For grass, germination success reduced by 10% and shoot length by 13%. An estimated 4.5 trillion butts are littered globally each year making them the planet's most pervasive form of plastic pollution, the study said. Most cigarette butts contain a filter made of cellulose acetate fibre, a type of a bioplastic. But researchers found filters from un-smoked cigarettes had almost the same effect on plant growth as used filters, indicating that the damage... Full story

19 July

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