ARE VIRGINIANS CURBING THE EFFECTS OF GLOBAL WARMING?

On this hazy hot and humid day in July, I found an interesting article from the Northern VirginiaTransportation Alliance. Click here for the article.  

Basically it noted while there has been a record tying early summer heat wave, there have been no code reds. According to the article "[t]emperatures reached the 90s or higher on 18 days, tying a record set in 1943.  In the past, such heat levels might have produced a dozen or more Code Red (unhealthy for all) air quality days.  Yet, despite record temperatures our region did not experience one Code Red day."  

Why has there been no Code Red day in June despite the record heat?  Many believe that technological advances including cleaner fuels and vehicles have been the key to improved air quality.  As a matter of policy, this is instructive for our efforts to limit greenhouse gas emissions and climate change.