Students hold up a globe during an activity to raise awareness of environmental protection ahead of "World Earth Day" on April 22 at a middle school in Dexing, East China's Jiangxi province, April 20, 2012. [Photo/Asianewsphoto]

The dogs, shown here at the police station, can barely move in their cramped cages. About 500 dogs rescued by animal lovers were in makeshift homes at the Wangjiaqiao police station in Kunming, Yunnan province, on April 20, 2012. [Photos by Duan Yuliang / for China Daily]