DDB China’s Jody Xiong worked with the China Environmental Protection Foundation on a campaign to create awareness about the environmental benefits of walking versus driving through having pedestrians create a visual reminder. Large white canvases depicting only a bare tree trunk and branches were placed across 132 crosswalks in 15 Chinese cities. As pedestrians crossed their shoe soles were imprinted with a small amount of green paint, leaving behind a trail of leaf-like footprints. BBD estimated that nearly 3,920,000 people passed through the installations, and the final posters were eventually hung has billboards in several urban locations.
Via: www.thisiscolossal.com