A creak, a thunderous roar, and then the plunge: Argentina’s Perito Moreno Glacier calves several times a day, as hundreds of ...

The event, known as calving, is a normal occurrence ... towers topple into the water, sending waves rippling across the lake. According to UNESCO, glaciers are "fragile mirrors" of climate ...

The event, known as calving ... sending waves rippling across the lake. Advertisement Article continues below this ad According to UNESCO, glaciers are “fragile mirrors” of climate change ...