Massive ice collapse at Argentina glacier sparks awe and alarm

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For years, visitors have flocked to Argentina’s Perito Moreno glacier to witness massive blocks of ice—some as tall as a 20‑story building—crashing into the water. This dramatic natural event, known as “calving,” has long inspired awe. But recently, the size and frequency of these icefalls have started to concern local guides and glaciologists. Once stable for decades, the glacier now appears to be losing mass and thinning, signs that it may finally be feeling the effects of climate change. While it remains a breathtaking sight, what’s happening beneath the surface is sparking serious questions about its future.