Common indoor plants may provide a valuable weapon in the fight against rising levels of indoor air pollution. NASA scientists are finding them to be surprisingly useful in absorbing potentially harmful gases and cleaning the air inside homes, indoor public spaces and office buildings.Through studies conducted by NASA, scientists have identified 50 houseplants that remove many of the pollutants and gases. These plants are rated for removing chemical vapors, ease of growth, resistance to insect problems, and transpiration (the amount of water they expire into the air).
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