Earth's Oceans Were Once Green, Says Study of Volcanic Waters
<img width="1024" height="415" src="https://www.sciencealert.com/images/2025/04/GreenOceanHorizon.jpg"; alt="Earth's Oceans Were Once Green, Says Study of Volcanic Waters"/>Could they change colour again?
https://www.sciencealert.com/earths-oceans-were-once-green-says-study-of-volcanic-waters
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2025-04-10 03:37:30 UTC
![https://www.sciencealert.com/images/2025/04/GreenOceanHorizon.jpg"](https://www.sciencealert.com/images/2025/04/GreenOceanHorizon.jpg"){kind=link}
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2025-04-10 03:37:30 UTCEvent JSON
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