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Earth's Slowing Spin Boosts Oxygen, Fuels Life Evolution

1/12/2025

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Summary

Story summary

Earth's rotation has gradually slowed over 4.5 billion years, extending day length and playing a crucial role in the Great Oxidation Event 2.4 billion years ago. Fueled by cyanobacteria, this event dramatically boosted atmospheric oxygen, paving the way for complex life. Recent studies reveal that longer days enhance photosynthesis, illustrating the profound link between Earth's spin and its atmospheric transformation.

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Story summary

Earth's rotation has gradually slowed over 4.5 billion years, extending day length and playing a crucial role in the Great Oxidation Event 2.4 billion years ago. Fueled by cyanobacteria, this event dramatically boosted atmospheric oxygen, paving the way for complex life. Recent studies reveal that longer days enhance photosynthesis, illustrating the profound link between Earth's spin and its atmospheric transformation.