Standing in one of the moss and dirt covered tunnels in Leeds, England, Paul Curtis, “Moose” as he calls himself, saw marks on the wall where the shoulders of unsteady drunks and the fingertips of curious children had exposed the shiny white tile. And with only a pair of socks as his tool, reverse graffiti was born.
No paint. No defacing. Moose makes his art by cleaning; removing the ills of dirt and pollution by de-defacing- wiping away dirt into large type and shapes, leaving nothing behind but a beautiful work of “green art.”

This is what it is:

This is how it’s done:

• The Projects Website is here: reversegraffiti.com
• via Martin Willms

[via Wooster Collective]

Here is the the last one, read more about Joyrider at Gizmodo. The bike that smiles when ridden:

Links:

• Dezeen on Moritz Waldemeyer
• Pixelsumo on Moritz Waldemeyer
• Moritz Waldemeyer on Moritz Waldemeyer [His own Blog]