But while lifeless during that time, the planet was already covered by vast oceans dotted with hydrothermal vent systems that ...
Ancient oceans, which were heavy on iron, interacted differently with light wavelengths, retracting green light into the ...
As Earth continues to evolve, scientists have recently discovered that the planet’s original oceans were not blue but green.
A distinctive blue and green image of Earth reveals our planet's most remarkable features. At 4.54 billion years old, our home world is a venerable object. But it was only with the arrival of the ...
From the iron-rich green waters of ancient Earth to the blue oceans of today, the planet’s color has reflected its ...