China winning war on pollution, has cut PM 2.5 levels: Study
China appears to be 'winning' its war on air pollution and has on average cut concentrations of fine particulate matter (PM) 2.5 by 32% over the last four years, the University of Chicago has said in its study. The level of PM 2.5, considered most harmful to health, can play a role in heart diseases and lung ailments including cancer.nnnnnn