What's the world's most littered plastic item? Cigarette butts

Cigarette filters are made of a plastic called cellulose acetate. When tossed into the environment, they dump not only plastic, but also the nicotine, heavy metals, and many other chemicals they’ve absorbed into waterways, and eventually oceans. But, there are solutions that can help our health and our planet. Make sure to read the full article, and check out the first episode of The Story of Plastic.