Plants help reduce indoor air pollution like removing carbon monoxide. NASA did a two-year research study on tropical plants and found that there are indoor plants that greatly reduce benzene and formaldehyde pollutants from the air. Benzene is a very commonly used solvent in many items like gasoline, oils, paints, plastics and rubber. Formaldehyde is found in pressed wood and is used in furniture, foam insulation, paper products, water repellents, carpet backings and permanent-press clothes. These pollutants can cause headaches, nausea, blurred vision, loss of appetite, and irritation of eyes, nose and throat, to name just a few. The list of plants that are the most effective in removing these toxins are Bamboo Palm, Chinese Evergreen, English Ivy, Gerbera Daisy, Janet Craig, Marginata, Corn Plant, Snake Plant, Chrysanthemum, Peace Lily, Warneckii, Boston Fern, Swedish Ivy, Spider Plant, Golden Pothos, Ficus and Philodendron. The NASA study has shown that placing plants in your home or office to improve the quality of the air to make it a more pleasant place to live and work will make people feel and perform better.