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Ancient Sloths: Giants Adapted, Human Impact Revealed

6/1/2025

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Summary

Story summary

A groundbreaking study of 403 sloth fossils unveils the incredible adaptability of ancient Megatherium sloths, which once rivaled elephants in size. While many species disappeared around 15,000 years ago, human influence, not climate change, played a crucial role. Today, only six sloth species survive, with two teetering on the brink of extinction.

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Story summary

A groundbreaking study of 403 sloth fossils unveils the incredible adaptability of ancient Megatherium sloths, which once rivaled elephants in size. While many species disappeared around 15,000 years ago, human influence, not climate change, played a crucial role. Today, only six sloth species survive, with two teetering on the brink of extinction.