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Study Reveals Ancient Green Oceans: A Photosynthesis Revolution

4/18/2025

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Summary

Story summary

A groundbreaking Japanese study reveals that Earth's oceans were once a vibrant green during the Archaean eon, 3.8 to 1.8 billion years ago, fueled by high iron levels. This rich environment nurtured cyanobacteria, pioneers of early photosynthesis. As we ponder the implications, could our oceans shift colors again as the sun ages?

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Story summary

A groundbreaking Japanese study reveals that Earth's oceans were once a vibrant green during the Archaean eon, 3.8 to 1.8 billion years ago, fueled by high iron levels. This rich environment nurtured cyanobacteria, pioneers of early photosynthesis. As we ponder the implications, could our oceans shift colors again as the sun ages?