Giant panda“Zhen Zhen”reclines on a tree branch in the San Diego Zoo. Officials from China and the California zoo signed an agreement on Thursday to extend the zoo’s giant panda conservation cooperation. The panda loan, which began in 1996 and was to end this year, was extended to allow adult giant pandas Bai Yun and Gao Gao to stay in San Diego for another five years. Young pandas born in the zoo will remain at the zoo’s Giant Panda Research Station until they are four years old.—Xinhua