Childhood asthma due to living near major roadways cost Los Angeles residents $441 million in 2007

Asthma caused or worsened by living near major roadways cost Los Angeles County more than $441 million in 2007 alone, according to a new peer-reviewed article. Because 32 percent of children in L.A. County are covered by public health insurance, an equivalent proportion of those direct costs are borne by taxpayers, they add.