File photo of a farmer working on a drought-hit paddy field in the outskirts of Chongqing municipality

 
File photo of a farmer working on a drought-hit paddy field in the outskirts of Chongqing municipality
A farmer works on a drought-hit paddy field in the outskirts of Chongqing municipality in this March 24, 2009 file photo. Global warming threatens China's march to prosperity by cutting crops, shrinking rivers and unleashing more droughts and floods, says the government's latest assessment of climate change, projecting big shifts in how the nation feeds itself. REUTERS/Stringer/Files (CHINA - Tags: ENVIRONMENT AGRICULTURE DISASTER)