Benefits of NAIs
NAIs are formed in rainforests, waterfalls, during heavy storms, anywhere where there is a lot of moisture in the air. In a forest will contain 2000 NAIs/cm3. That is the reason forest air has that clean and crisp feel we all love. In our increasingly urban lives, NAIs are significantly lower at only ~100-200 NAIs/cm3 away from plants that can drop significantly.
More information on the beneficial effects of NAIs can be found here: