Although the Earth’s been decidedly blue for 600 million years, rising populations of phytoplankton caused by rising ...

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

The ocean can be many colors, but for the most part it's deep blue. But why? And what's up with green or brown or red water?

But iron is scarce in many areas of the ocean. If experiments ... of organic material as blue marine ice, so something else had to be responsible for the green color. The problem nagged at Warren ...

Viridian Odyssey, a deep, sophisticated shade of blue-green strikes a balance between cool serenity and natural warmth.