Book on that, _How to Grow Fresh Air_: https://www.goodreads.com/book/show/308235.How_to_Grow_Fresh_Air https://www.goodreads.com/book/show/308235.How_to_Grow_

Book on that, _How to Grow Fresh Air_: https://www.goodreads.com/book/show/308235.How_to_Grow_Fresh_Air https://www.goodreads.com/book/show/308235.How_to_Grow_Fresh... >In research designed to create a breathable environment for a NASA lunar habitat, noted scientist Dr. B.C. Wolverton discovered that houseplants are the best filters of common pollutants such as ammonia, formaldehyde, and benzene.