The glaciers of the Alps, natural monuments in danger

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Tens of thousands of years old, the glaciers, fascinating natural monuments, are under threat. The French Alps have more than 4,000 of them, of which 80% to 90% will have disappeared by 2100 under the effect of global warming. Among the most emblematic glaciers, the Mer de Glace suffers and retreats a little more each year, under the eye of tourists. The Bossons glacier reveals aircraft debris that we thought had disappeared forever. Striking images.