The glaciers on Africa's Mount Kilimanjaro are shrinking and could disappear by 2030, according to researchers speaking at the American Geophysical Union's annual meeting last week. Over the past 13 years, the northern ice field shrank more than 140 million cubic feet, or 4 million cubic meters, a loss in volume of about 29%, says research scientist Pascal Sirguey of New Zealand's University of Otago. Researchers tracked the glaciers' changes using detailed images from the GeoEye-1 satellite, creating a 3D digital elevation model of the massive volcano.

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