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André Summermatter, who is leading a seasonal roundup of free-range sheep and goats, is dropped of by Helicopter in Belalp, Switzerland, Aug. 25, 2023. Rising temperatures and retreating glaciers threaten the country?s mountain stores of water, sometimes called Europe?s water tower, forcing local farmers to adapt and presaging a way of life that may one day melt away. (George Steinmetz/The New York Times/Fotoarena)
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