Gallery: World’s Largest Tropical Ice Sheet Took at Least 1,600 Years t...


The Quelccya ice cap in the Andes Mountains of Peru took upwards of 1,600 years to form, and it could have formed as long as 6,000 years ago, but it took just 25 years to melt away. Scientists from Ohio State University reported this month that global warming has caused the world’s largest tropical sheet ice to rapidly recede 40 times faster than ever before. Despite the concern caused by the rapid melting, the receding ice has exposed ancient plants that were buried for thousands of years, giving scientists a hauntingly accurate measure of the ice sheet’s age and movements.

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