nasa has another way - phytoremediation (Score 1)

Wolverton Environmental Services, Inc. (WES, Inc.), founded in 1990 by B. C. "Bill" Wolverton, Ph.D., is a small environmental consulting firm providing consultant services in the field of phytoremediation. The Company advocates the use of plants and their root-associated microorganisms to biodegrade and treat indoor air and water pollution. http://www.ssc.nasa.gov/environmental/docforms/wat er_research/water_research.html http://www.ssc.nasa.gov/~ssctrs/abstracts/cit.html http://www.wolvertonenvironmental.com/book1.htm