Employees work next to a well drill at a PetroChina oil field in Daqing, Heilongjiang province December 8, 2009. China led calls by developing nations for deeper emissions cuts from the United States, Japan and Europe at U.N. climate talks on Tuesday, as a study showed that this decade will be the warmest on record. Picture taken December 8, 2009. REUTERS/Stringer
(CHINA ENERGY BUSINESS) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA