Tainted water exhibition roves around Beijing

More than 500 bottles of Nongfu Spring, a ubiquitous Chinese brand, filled with contaminated drinking water from the village of Xiaohaotu in China's northwest Shaanxi province is being driven around Beijing as a reminder of the costs of the country's rapid economic development. The mobile exhibition, created by "Nut Brother" -- an artist known for advocacy work on environmental and social issues -- was created in defiance after his initial show was shut down.