"Rowan Leaves," By Andy Goldsworthy
"Reverse Grafitti," By Mr. Kiji
Street artist, Mr. Kiji, partnered with Green Works to transform an underpass in L.A. into an art gallery, by using cleaning products to remove the dirt and grime from over the years. His "cleaning" left behind inspiring shapes and designs and brings forth the notion that small changes and action can have an impact on the environment.