Green house effect New easy-care houseplants clean the air while sprucing up decor Jessica Damiano / Newsday Houseplants are making a comeback, and not just to add a spark of color to a room. People are thinking green -- as in the green movement that's been picking up steam throughout the country. According to the results of a research study conducted by NASA scientist B.C. Wolverton nearly 25 years ago, plants are the most efficient and cost-effective method of "indoor air pollution abatement." In other words, growing houseplants in your home will result in cleaner air in your home. And the idea has finally caught on. .
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