27,000-year-old giant ground sloth tooth is like a climate time capsule

By Ashley Strickland, CNN

Updated 2:08 PM ET, Wed February 27, 2019

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Meet Sasha, the preserved and reconstructed remains of a baby woolly rhinoceros named that was discovered in Siberia.
Photos: Ancient finds
Meet Sasha, the preserved and reconstructed remains of a baby woolly rhinoceros named that was discovered in Siberia.
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Stone tools made from limestone have helped researchers to suggest that humans arrived in North America as early as 30,000 years ago.
Photos: Ancient finds
Stone tools made from limestone have helped researchers to suggest that humans arrived in North America as early as 30,000 years ago.
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This image shows both sides of the 1.4 million-year-old bone handaxe made from the femur of a hippopotamus. It was most likely crafted by ancient human ancestors like Homo erectus.
Photos: Ancient finds
This image shows both sides of the 1.4 million-year-old bone handaxe made from the femur of a hippopotamus. It was most likely crafted by ancient human ancestors like Homo erectus.
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This illustration shows Kongonaphon kely, a newly described reptile that was an early ancestor of dinosaurs and pterosaurs. The fossil was found in Madagascar. It lived about 237 million years ago.
Photos: Ancient finds
This illustration shows Kongonaphon kely, a newly described reptile that was an early ancestor of dinosaurs and pterosaurs. The fossil was found in Madagascar. It lived about 237 million years ago.
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The Okavango Delta in Botswana showcases a patchy landscape where the ability to plan results in a huge survival payoff.
Photos: Ancient finds
The Okavango Delta in Botswana showcases a patchy landscape where the ability to plan results in a huge survival payoff.
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This is a clutch of fossilized Protoceratops eggs and embryos, discovered in the Gobi Desert of Mongolia. They provide evidence that dinosaurs laid soft-shell eggs.
Photos: Ancient finds
This is a clutch of fossilized Protoceratops eggs and embryos, discovered in the Gobi Desert of Mongolia. They provide evidence that dinosaurs laid soft-shell eggs.
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These tools, made from the bones and teeth of monkeys and smaller mammals, were recovered from Fa-Hien Lena cave in Sri Lanka. The sharp tips served as arrow points.
Photos: Ancient finds
These tools, made from the bones and teeth of monkeys and smaller mammals, were recovered from Fa-Hien Lena cave in Sri Lanka. The sharp tips served as arrow points.
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This labeled map shows the complete ancient Roman city of Falerii Novi as it currently exists underground.
Photos: Ancient finds
This labeled map shows the complete ancient Roman city of Falerii Novi as it currently exists underground.
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