The sea around the island of Iwo, one of the Islands of the Japanese coastline is green because of high iron levels
Taro Matsuo et al. (2025)
To achieve a long stretch of land history, our planet could look green from a distance, instead of being a pale blue point we know today.
The green period of the earth lasted about 3 billion years ago 600 million years ago, probably the evolution of cyanobacteria The atmosphere filled with a breathable amount of oxygensays Taro Matsuo Japanese Nagoya University.
