Houseplants cut indoor ozone

Houseplants cut indoor ozone  
Common plants could prove cost-effective alternatives for reducing ozone in offices, homes  
http://www.eurekalert.org/pub_releases/2009-09/asfh-hci090809.php 
 
"Ozone, the main component of air pollution, or smog, is a highly reactive, colorless gas formed when oxygen reacts with other chemicals. Although ozone pollution is most often associated with outdoor air, the gas also infiltrates indoor environments like homes and offices. Ozone can be released by ordinary copy machines, laser printers, ultraviolet lights, and some electrostatic air purification systems, all of which contribute to increased indoor ozone levels. Topping the extensive list of toxic effects of ozone on humans are pulmonary edema, hemorrhage, inflammation, and reduction of lung function."