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Dinosaur Teeth Reveal Ancient CO2 Levels Soared Fourfold

8/11/2025

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Summary

Story summary

Dinosaur teeth are unlocking secrets of the Mesozoic Era, revealing carbon dioxide levels soaring four times above pre-industrial rates, likely driven by volcanic eruptions. By examining oxygen isotopes from teeth across North America, Africa, and Europe, researchers are connecting ancient atmospheric conditions to the lush vegetation and ecological shifts of that time.

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Story summary

Dinosaur teeth are unlocking secrets of the Mesozoic Era, revealing carbon dioxide levels soaring four times above pre-industrial rates, likely driven by volcanic eruptions. By examining oxygen isotopes from teeth across North America, Africa, and Europe, researchers are connecting ancient atmospheric conditions to the lush vegetation and ecological shifts of that time.