@CNN: Scientists believe they have discovered the first examples of air pollution traveling through the bloodstream of pregnant women and into their placentas, possibly reaching their fetuses https://t.co/hYvezYir23 https://t.co/npapmoYFwq

@CNN: Scientists believe they have discovered the first examples of air pollution traveling through the bloodstream of pregnant women and into their placentas, possibly reaching their fetuses https://t.co/hYvezYir23 https://t.co/npapmoYFwq