Maybe it is my nose but even the Caribbean air smells smoky nova days do to uncontrolled emission.
One could say now: "Oh that isn't us, that's in the third world countries." But just forced to come to San Antonio, Texas I encountered the air doesn't smells any better. If anything it smells worse… and so I read "…San Antonio, TX is now on of the cities with the dirtiest air. It is currently holding place 8 on the list of the cities with the most air pollution in the USA.

I used three different photos for the collage [car and hwy, clouds and green trees].
The car and the highway were treaded with filters, clouds and trees remain original. The three photos were merged. The dead tree and parts of the highway were painted in by hand using different paintbrushes.
Programs being used are Digital Imagining 2006 and Paint Shop pro X2.