Key findings behind our ozone investigation

Key findings:

  • It’s not just L.A.: From big cities to suburbs to rural Utah, many places fail EPA’s smog standards.
  • The EPA places the cost of reducing lung-damaging ozone at $15 billion a year. The National Association of Manufacturers says $140 billion.
  • Americans get no air-quality warnings about a host of bad-ozone days.
  • EPA’s science advisers have said since ’06 that U.S. ozone standards don’t protect health.
  • Current U.S. smog standard, set in 2008, is the first one that’s stricter than the original limit set in 1971.