300 million

UNICEF: 300 Million Kids are Breathing Toxic Air

New research from the United Nations Children’s Fund (UNICEF) shows that 300 million children – 1 in 7 globally – live in areas with “toxic” levels of air pollution. [1] [2]
 
The poorer a child is, the more likely he or she is to be surrounded by filthy air, and the greater the likelihood that he or she will suffer health problems as a result.