The United Nations environment agency unveiled a new atlas Tuesday that shows what the agency says are the dramatic effects of climate change on Africa. The nearly 400-page long publication features over 300 satellite images taken in every African country. The before and after photographs, some of which span a 35-year period, appear to show striking environmental changes across the continent. "The atlas clearly demonstrates the vulnerability of people in the region to forces often outside their control," Achim Steiner, executive director, for the United Nations Environment Program said at a meeting of African environmental ministers in Johannesburg. "It is an indication of how serious the situation has become." Although Africa produces only four percent of the world's total carbon dioxide emissions, its inhabitants are expected by some officials to suffer most from the consequences of climate change.