Did you know?
The average adult American spends 90% of his daily life indoors. Concentrations of indoor air pollutants usually greatly exceed the maximum tolerances for outdoor ambient air.
Keeping houseplants can improve the quality of your home or office's air, and NASA uses houseplants to filter air on the space shuttle missions.
A list and brief discussion of houseplants that NASA found effective in cleaning air.
NASA's original paper on houseplants and air quality.