07-14-2014, 11:17 PM
|
#170 (permalink)
|
|
Master EcoModder
Join Date: Dec 2011
Location: New Zealand
Posts: 5,121
Thanks: 2,921
Thanked 2,589 Times in 1,608 Posts
|
It's definitely true that smog levels have decreased drastically since emissions laws have tightened.
|
|
|
|