Green Dream Park promotes low-carbon lifestyle

A visitor poses for photos with two robots, made of used materials, at the Green Dream Park near Bird's Nest, China's National Stadium, July 16, 2010. [Photo/CFP]

Visitors check out the musical bands of robots, made of used materials, in a room at the Green Dream Park near Bird's Nest, China's National Stadium, July 16, 2010. [Photo/CFP]