Support WBURWhen LA's Air Got Better, Kids' Asthma Cases DroppedPlay03:02Download AudioRichard HarrisMay 21, 2019 ShareAn analysis of air quality and childhood asthma in Los Angeles found that kids' health improved when smog declined. (AFP/Getty Images)
An analysis of air quality and childhood asthma in Los Angeles found that kids' health improved when smog declined. (AFP/Getty Images)