Huffpost Green

Cigarette Butts' Toxicity Kills Fish

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Even with a small amount of unburnt tobacco clinging to it, a single cigarette butt soaked for a day is enough to turn a liter of water a sickly yellow brown and kill 50 percent of fish swimming in it. Without tobacco, it takes about 4 smoked filters to do the same job.

Read the whole story at news.discovery.com

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