 So as parents, we have to be really watchful and try to recognize those symptoms in our kids. Child deaths from the heat are rare. Arizona reports hundreds of heat deaths each year, but the majority are among adults over 50. For NPR News, I'm Catherine Davis-Young in Phoenix. Federal regulators are warning of the dangers of faulty replacement airbags that have caused the deaths of three people over the past year, while two people suffered life-altering injuries. NPR's Camille Dominovsky has more.