Air purifying live plants – The spider plant is one of the top most plant approved by NASA for air purification indoors. It battles pollutants such as benzene, formaldehyde, carbon monoxide and xylene. As an added bonus, this plant is also considered a safe houseplant if you have pets in the house. The Sansevieria plants are commonly known as snake plants and it is one of the best houseplants of all time. Variants of this category of plants include short leaves, long leaves, green & tinted, green with yellow stripings etc. The other names of this plant are mother-in-law?s tongue, bowstring hemp, devil?s tongue etc. It can survive with low light levels and irregular watering. Peace lily (officially called Spathiphyllum) is a member of the Araceae family and grows in the tropical rainforests of Colombia and Venezuela Ranked third by NASA in removing three of most common air pollutants? formaldehyde, benzene and trichloroethylene.