House Plants Clean the Air
A classic NASA study found that common house plants could improve air quality. In fact, they reported that houseplants were able to remove up to 87 percent of air toxins in 24 hours. The recommendation? Use 15 to 18 "good-sized" house plants in 6- to 8-inch diameter containers for an 1,800 square-foot house.
Plants can remove a variety of toxic air emissions including ammonia, formaldehyde, carbon monoxide, benzene, xylene and trichloroethytene.