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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, which continued from about 3 billion to 600 million years ago, is said to have shaped the evolution of cyanobacteria, which filled the atmosphere with a breathable amount of oxygen. Matsugotaro At Nagoya University in Japan.
Source: www.newscientist.com
