That led to massive amounts of iron being washed into the sea. Then, depending on its ionic charge, it made the water appear brown, gray or green. Their simulation showed the iron was triple ...

For most of human history, Earth has been known as the “Pale Blue Dot,” a term popularized by astronomer Carl Sagan when referring to the iconic 1990 image taken by Voyager 1. But for billions of ...

“If we assume an atmosphere similar to today’s, the green hue reflected by the ocean would have mixed with the blue from Rayleigh scattering, likely creating a more bluish-green color rather ...

Earth's oceans may have been green for billions of years until the first photosynthetic organisms flooded our atmosphere with oxygen.

As spring nears, the University of Minnesota, Minnesota Sea Grant, and the Natural Resource Research Institute are hosting a ...