300 million children breathe heavily toxic air - UNICEF

WASHINGTON: Some 300 million children live with outdoor air so polluted it can cause serious physical damage, including harming their developing brains, the United Nations said in a study released on Monday.

Nearly one child in seven around the globe breathes outdoor air that is at least six times dirtier than international guidelines, according to the study by the UN Children's Fund, which called air pollution a leading factor in child mortality.