The snow covers the mountain peak of the Himalayas in this May 21, 2003 file photo. Global warming could cause more hunger in Africa and melt most Himalayan glaciers by the 2030s, according to a draft U.N. report due March 30 2007 which also warns that the poorest nations are likely to suffer most. REUTERS/Gopal Chitrakar/File. NO RIGHTS CLEARANCES OR PERMISSIONS ARE REQUIRED FOR THIS IMAGE.