Clean Art!

I came across this artist, Paul “Moose” Curtis, who does what is called "Reverse Graffiti"; essentially, cleaning a very dirty surface with a pressure washer, using stencils and such to create beautiful pieces of art that are earth friendly and raise environmental awareness.
It's a really interesting concept and I've found his work amazing. The video is from his project with Green Works, but since this he has struck out on his own without sponsoring corporations.
Check it out!