Airborne substances harmful to health

Visualization of narrower problems
Incidence 
Each year, air pollutants adversely affect the health of 4 to 5 billion people worldwide. An expanding world population is burning more fossil fuels, emitting more industrial chemicals and driving more automobiles. The number of automobiles is increasing three times faster than the rate of population growth.
Aggravated by 
Value(s) 
Type 
(D) Detailed problems