ENVIRONMENT WARMING...A FILE PHOTO OF TARAWA KIRIBATI IN THE SOUTH PACIFIC...An aerial view shows Tarawa, Kiribati, South Pacific in this 1978 file photo. The earth's atmosphere is warming faster than expected and evidence is mounting that human activity is responsible, the United Nations Environment Programme said January 22, 2001. The U.N.'s Intergovernmental Panel on Climate Change (IPCC) now projects the earth's average surface temperature will rise 1.4 to 5.8 degrees Celsius between 1990 a