Effects ---Global warming

FRANK LANE PICTURE AGENCY/CORBIS EXHIBIT A: Thinning Ice

Antarctica, home to these Adélie penguins, is heating up. The annual melt season has increased up to three weeks in 20 years.

Mount Kilimanjaro has lost 75% of its ice cap since 1912. The ice on Africa's tallest peak could vanish entirely within 15 years.

Lake Baikal in eastern Siberia now freezes for the winter 11 days later than it did a century ago.

Montana will lose all the glaciers in Glacier National Park by 2070 if their retreat continues at the current rate.

Venezuelan mountaintops had six glaciers in 1972. Today only two remain.