Its creators claim it can do the work of 1,200 trees.
Finally, an awesome use of surveillance technology.
Julian Marshall explains why he wanted to make a film about the "Obey Giant" street-art campaign.
The high-tech billboard transforms atmospheric moisture into drinking water for thirsty Peruvians.
But not exactly in the way you might think.
Anonymous advertising is against Clear Channel Policy, but this contract was signed by mistake.
The new frontier of augmented reality apps comes to urban art.
Lawsuits and questions about the true nature of murals have confounded L.A. for a decade.
A photo project in Los Angeles and Philadelphia implants images of nature on urban billboards and buildings