pollutants do part-time cleaning job - air cleaner

Fred Pearce looks obvious & Cologne;
Reducing pollution should make our air cleaner.
In fact, things are not that simple.
While particles generated by diesel engines, industry and burning biomass make the atmosphere dirtier, they have proved to also help prevent dangerous buildings --
We breathe ozone in the air.
Common contaminants such as methane and carbon monoxide are purified from the atmosphere by highly active ions (such as oh), which are manufactured by UV-driven reactions.