According to NASA “If man is to move into closed environments, on Earth or in space, he must take along nature’s life support system i.e. Plants".
In 80's NASA found some houseplants that can be used to filter out the VOCs (volatile organic compounds) in space stations. Luckily those plants are easily available and can also be used in earth to purify indoor air which is more polluted than outdoor air.
Generally people spend 80-90% of their time indoors so indoor air quality do matter a lot. Air tight homes and offices, modern day home furnishings are the major source of indoor air pollution.
From our school days we are learning, through Photosynthesis plants absorb carbon dioxide and release oxygen but, some plants can even effectively filter and reduce indoor air pollutants like Benzene, formaldehyde, xylene, toluene etc.
We know indoor plants clean the air but don't know exactly up to which extent. Roughly it is believed that 18-20 good sized plants are pretty good for a 2000 sqft area.
Some of the air purifying houseplants like Sansevieria/Snake plant, Spider plant, Peace lily, English ivy, Chinese evergreen, Aloevera etc. are easily available, affordable, long lasting and need less care.
It's a wise decision to add more and more plants to our work and living environment which not only purify air effectively but also add beauty to the place around us.
Plants around us make the air clean, reduce our stress level, improve our concentration which overall give us a Happy n Healthy Life.