The way secure clean air at your residence or office? The answer to this specific question thanks researcher who resides one of the most polluted cities in the entire world: Delhi. The problem of not enough clean air and touched him personally caused by allergies his lung capacity decreased to 70%. With the help of NASA discovered how you can ensure access to ticket while living even in their normal polluted place like Delhi. The solution to your condition is not found in another place than in nature. As it turns out there, there are three normal houseplants, which are able to provide human survival even in a very tightly enclosed space!