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Earth’s oceans may have been green for billions of years

Summary by NewScientist
Some cyanobacteria have pigments that specialise in harvesting green light to power photosynthesis, which may be because they evolved at a time when the oceans were iron-rich and green-tinged

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geologyin.comgeologyin.com

Earth's Ancient Oceans Were Green for Billions of Years – Geology In

For billions of years, Earth's oceans may have been green, giving the planet a "pale green dot" appearance from a distance, rather than the familiar pale blue we know today. A recent study suggests that between 3 billion and 600 million years ago, iron-rich waters turned the seas a striking green, likely influencing the course of evolution and the development of life on Earth. How Earth’s Oceans Turned GreenDuring the Archaean era, Earth's ocean…

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themondonews.comthemondonews.com

Green oceans may have existed on Earth for billions of years

The seas around Iwashima, one of the Satsunan Islands off the coast of Japan, are green due to high iron levels. Taro Matsuo et al. (2025) Due to the long stretches of Earth's history, our planet may have looked green from afar, instead of the pale blue dots we know today. The Earth's Green Age, [...] Source The post Green oceans may have existed on Earth for billions of years appeared first on Mondo News.

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NewScientistNewScientist

Earth’s oceans may have been green for billions of years

Some cyanobacteria have pigments that specialise in harvesting green light to power photosynthesis, which may be because they evolved at a time when the oceans were iron-rich and green-tinged

·Baltimore, United States
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NewScientist broke the news in Baltimore, United States on Tuesday, February 18, 2025.
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