Agence France-Presse: UN Secretary-General Ban Ki-moon said today he expects “greater leadership” on climate change from whichever candidate succeeds George W. Bush as president of the United States in 2009. “I sincerely hope the next US administration will demonstrate a greater leadership role,” Mr Ban said on the sidelines of a ceremony here to mark 20 years of the United Nations’ Intergovernmental Panel on Climate Change (IPCC). In his eight-year presidency, Mr Bush has consistently refused to …