Moss graffiti, also called eco-graffiti or green graffiti, replaces spray paint, paint-markers or other such toxic chemicals and paints with a paintbrush and a moss "paint" that can grow on its own. As people become more eco-friendly and environmentally aware, the idea of making living, breathing graffiti has become a more green and creative outlet for graffiti artists. It can also be considered another form of guerrilla gardening.

Playful and ironic photos and little installations.

A beautiful set of photos from a land artist. Leaves, twigs, stones, and thorns. This stuff is so excellent.

"'Garden of Eden', 2007 by Wollle shows eight pedestals, each of which is covered with an airtight Plexiglas box. Via the internet, the latest air pollution levels in the capitals of the G8-countries are obtained. The system reproduces these levels artificially inside these boxes, each of which contains a lettuce that serves an indicator of the quality of the air inside the capsules."

"Happily in love you step down the decaying corpse, through the wound, now small like a maggot, over woolen kidney and bowel. "

"An outdoor ambient music piece for an infinite number of boomboxes. It’s like a Christmas caroling party except that we don’t sing, but rather carry the music, each of us playing a separate track that is a 'voice' in the piece."

"This simple yet effective concoction is an old favourite of gardeners trying to encourage moss growth and provides an excellent alternative to spray paint."

Some incredibly cool sculptures in New Zealand; check out the stairway.

"The drawings -- which include human figures as well as animals such as birds, monkeys, and felines -- are believed to have been created by members of the Paracas Culture sometime between 600 and 100 B.C."

Sidewalk chalk to the extreme.

"Using Wireless Bicycles to Protest the 2004 Republican National Convention in NYC"