Scientists, believe it, are finding soot in mothers placentas, meaning unborn babies are directly exposed to the black carbon produced by motor traffic and fuel burning.

说出来你们可能不信，科学家在孕妇的胎盘中发现了烟尘。这意味着婴儿尚未出生就直接暴露于机动车行驶和燃料燃烧产生的黑碳之下。