NASA Clean Air Study

The following plants were tested during the initial 1989 study: • Variegated snake plant / mother-in-law's tongue (Sansevieria trifasciata laurentii) • English ivy (Hedera helix) • Peace lily (Spathiphyllum 'Mauna Loa') • Chinese evergreen (Aglaonema modestum) • Bamboo palm (Chamaedorea seifrizii) • Red-edged dracaena, marginata (Dracaena marginata) • Cornstalk dracaena, mass cane/corn cane (Dracaena fragrans 'Massangeana') • Weeping fig (Ficus benjamina) • Barberton daisy, gerbera daisy (Gerbera jamesonii) • Florist's chrysanthemum, pot mum (Chrysanthemum morifolium) • Dracaena deremensis 'Janet Craig' • Dracaena deremensis 'Warneckei' ==Additional research==

Since the release of the initial 1989 study, titled A study of interior landscape plants for indoor air pollution abatement: An Interim Report, further research has been done including a 1993 paper and 1996 book by B. C. Wolverton, the primary researcher on the original NASA study, that listed additional plants and focused on the removal of specific chemicals. A different study in 2004 has also shown that the micro-organisms in the soil of a potted plant remove benzene from the air, and that some plant species themselves also contribute to removing benzene. Other studies Plants studied in various similar studies on air filtration: ==See also==