Indoor plants found to release volatile organic compounds

Indoor plants found to release volatile organic compounds  
Study indicates need for further research to determine environmental, health impacts  
http://www.eurekalert.org/pub_releases/2009-09/asfh-ipf090309.php   
 
"Potted plants add a certain aesthetic value to homes and offices, bringing a touch of nature to indoor spaces. It has also been shown that many common house plants have the ability to remove volatile organic compounds-gases or vapors emitted by solids and liquids that may have adverse short- and long-term health effects on humans and animals-from indoor air. But take heed when considering adding some green to your environment; in addition to giving off healthy oxygen and sucking out harmful VOCs, a new study shows that some indoor plants actually release volatile organic compounds into the environment."