Those early experiments claiming that plants can clean indoor air had significant methodological problems, and the results have not been reproducible in realist

Those early experiments claiming that plants can clean indoor air had significant methodological problems, and the results have not been reproducible in realistic building environments: http://www.buildingecology.com/articles/critical-review-how-well-do-house-plants-perform-as-indoor-air-cleaners/ http://www.buildingecology.com/articles/critical-review-how-... The fact that NASA's name is associated with this study has led it to be widely accepted uncritically.