CNN The Situation Room June 27, 2014 21:54:00
Indication of how other pollution is trending. but there are other pollutants out there causing harm. >> we have about half the nation who lives in counties that have unhealthy levels air pollution. >> reporter: that's about 140 or more million americans who still live areas with air. the worst in the united states for even that city made big improvements. l.a. has cut it air pollution bs a problem for europe, isn't that right scientists we talked to today say we have a problem with par tick la lates in the air. and with thestream, carries it all east up around a europe. goes 0 intoeurope.
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