Alkaline water is released into the river to dilute cadmium at Nuomitan Hydropower Station, in Liuzhou city, South China’s Guangxi Zhuang autonomous region, Jan 30, 2012. The station is the last one on Longjiang River before it merges with Rongjiang River and forms Liujiang River, 60 kilometers from the downtown area of Liuzhou city, which has 3.7 million residents. [Photo/CFP]