NEW YORK TIMES: The ice atop Mount Kilimanjaro in Tanzania has continued to retreat rapidly, declining 26 percent since 2000, scientists say in a new report. Yet the authors of the study, to be published Tuesday in the Proceedings of the National Academy of Sciences, reached no consensus on whether the melting could be attributed mainly to humanity’s role in warming the global climate. Eighty-five percent of the ice cover that was present in 1912 has vanished, the scientists said. To measure the recent pace of the retreat, researchers relied on data from aerial photographs taken of Kilimanjaro over time and from stakes and instruments installed on the mountaintop in 2000, said Douglas R. Hardy, a geologist at the University of Massachusetts and one of the study’s authors. The photographs measure horizontal shrinkage of the ice, and the stakes indicate the reduction in depth. Both are decreasing at the same rate, Dr. Hardy said. MORE