Video presentation by Kamal Meattle on the benefits of plants in buildings (4 minutes)
www.ted.com/.../kamal_meattle_on_how_to_grow_your_own_fresh_air.html
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Name – PlantCraft - Indoor plants and health...
"How to Grow your own Air"

Abridged extract from this presentation;

"The three plants are Areca palm, Mother-in-Law's Tongue and money plant. Areca palm is a plant which removes CO2 and converts it into oxygen. We need four plants per person, and in terms of plant care, we need to wipe the leaves every day in Delhi, and perhaps once a week in cleaner-air cities. The second plant is Mother-in-law's Tongue, which is again a common plant, and we call it a bedroom plant, because it converts CO2 into oyxgen at night. The third plant is money plant ( Scindapsis Aureus), and this is again a very common plant, which removes formaldehydes and other volatile chemicals.

With these three plants, you can grow all the fresh air you need. In fact, you could be in a bottle with a cap on top, and you would not die at all, and you would not need any fresh air. We have tried these plants at our own building in Delhi, which is a 50,000-square-feet, 20-year-old building. And it has close to 1,200 such plants for 300 occupants. Our studies have found that there is a 42 percent probability of one's blood oxygen going up by one percent if one stays indoors in this building for 10 hours. The government of India has published a study to show that this is the healthiest building in New Delhi.

And the study showed that there is a, compared to other buildings, there is a reduced incidence of eye irritation by 52 percent, respiratory systems by 34 percent, headaches by 24 percent, lung impairment by 12 percent and asthma by 9 percent. And this study has been published on September 8, 2008, and it's available on the government of India website.

Our experience points to a amazing increase in human productivity by over 20 percent by using these plants. And also a reduction in energy requirements in buildings by an outstanding 15 percent, because you need less fresh air. We are now replicating this in a 1.75-million-square-feet building, which will have 60,000 indoor plants. "