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This photo taken on September 17, 2015 shows a Chinese labourer lighting a cigarette as they sort out metal for recycling in Dong Xiao Kou village, on the outskirt of Beijing. China is the world's biggest emitter of the greenhouse gases that cause climate change, and a crucial player in the global gathering finishing on December 11 in Paris, where nations have been trying to thrash out a plan to limit dangerous global warming. The 195-nation UN climate rescue talks in the French capital have been billed as the last chance to avert worst-case-scenario climate change impacts: increasingly severe drought, floods and storms, as well as island-engulfing rising seas. AFP PHOTO / FRED DUFOUR (Photo by FRED DUFOUR / AFP via Getty Images)