A new study by researchers at Peking University has found that fine particles in China’s polluted air kill 64,000 babies in the womb each year.Photo: SCMP Composite‘Airborne baby killer’: 64,000 die in womb each year as a result of polluted air in China despite official efforts to tackle problem- New Peking University study calculates number of fetal deaths caused by fine particle pollution for first time- China ranks fourth worst in the world after India, Pakistan and Nigeria in terms of number of filthy air-linked stillbirthsA new study by researchers at Peking University has found that fine particles in China’s polluted air kill 64,000 babies in the womb each year.Photo: SCMP Composite"