Chinese scientists find good use for cigarette butts

By Amy Bennett  Add a new comment

With 300 million smokers, China is the world's largest consumer of cigarettes -- and that means plenty of cigarette butts lying around. Is there some more efficient way to deal with them than just dumping them into a landfill? One research group has found that the toxic chemicals therein can be used to keep water pipes from corroding. Read more...

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