Greek Prime Minister George Papandreou, left, and U.N. Secretary-General Ban Ki-moon look up at the sky before their meeting at the Premier's office in Athens on Wednesday, Nov. 4, 2009. Ban Ki-moon warned that the problem of environmental refugees from developing countries is increasing the pressure for a climate change agreement at an upcoming conference in Copenhagen. The U.N. chief spoke at an international conference on immigration Wednesday in Greece, where he began a two-day official visit. AP Photo logo AP Photo 1 month ago

Greek Prime Minister George Papandreou, left, and U.N. Secretary-General Ban Ki-moon look up at the sky before their meeting at the Premier's office in Athens on Wednesday, Nov. 4, 2009. Ban Ki-moon warned that the problem of environmental refugees from developing countries is increasing the pressure for a climate change agreement at an upcoming conference in Copenhagen. The U.N. chief spoke at an international conference on immigration Wednesday in Greece, where he began a two-day official visit.