Peruvian glaciers continue to retreat.
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Stretching across a vast volcanic plain in Peru, the Quelccaya Ice Cap is the tropics’ largest sheet of ice—for now. Climate shifts are taking their toll, according to scientists who note that the glacier has been not only losing ice over the last few decades but doing so over an accelerating rate. And following a study recently published in the journal Geology, many scientists are now more certain than ever that the ice loss is due to rising temperatures.
It may hardly sound like a surprise that a glacier’s retreat would be due to warming climate, but researchers monitoring the Quelccaya and other shrinking glaciers in the tropics have had their honest doubts. Some have hitherto suggested that decreased snowfall might be the culprit, for example.