Two pandas at a zoo in central France are to return to China on Tuesday after the female was diagnosed with kidney failure, drawing hundreds of visitors for a final goodbye. Huan Huan and her partner Yuan Zi arrived at the Beauval Zoo in 2012 as part of China's "panda diplomacy" programme, which sees the black-and-white bears dispatched across the globe as soft-power ambassadors. The two pandas, both 17, were meant to stay in France...