‘Carmaheaven’: Closure of I-405 in 2011 improved air quality up to 83 percent

In study findings announced Sept. 28, UCLA researchers report that they measured air pollutants during last year’s Carmageddon (July 15–17) and found that when 10 miles of the 405 closed, air quality near the shuttered portion improved within minutes, reaching levels 83 percent better than on comparable weekends. Read the Complete Article