Last seen in:
- USA Today - Feb 14 2016
- Thomas Joseph - King Feature Syndicate - Oct 31 2012
- Eugene Sheffer - King Feature Syndicate - Feb 21 2012
- Universal - Oct 6 2011
- Universal - Jan 10 2011
- Thomas Joseph - King Feature Syndicate - Feb 12 2010
- Newsday.com - Sep 25 2009
- Thomas Joseph - King Feature Syndicate - Dec 11 2008
- Thomas Joseph - King Feature Syndicate - Sep 20 2008
- USA Today - Dec 22 2006
Related Clues:
- Clean air hurdle
- Possible cause of heavy breathing
- Visibility obstacle
- Spread out ungracefully
- City haze
- L.A.'s haze
- Sight inhibitor, often
- L.A. issue
- Exhaust issue
- Cause of some urban coughs
- Urban planner's concern
- Air woe watched by the EPA
- Visibility obstructer
- Urban health problem
- Freeway byproduct