Why, of all the colors out there, are our oceans blue? The answer lies in the physics of visible light waves, specifically, how the ocean absorbs and reflects different colors of light.

Scientists have discovered evidence that Earth's oceans were once green, hinting that this could be a marker of early life, ...

Imagine the world’s oceans with their beautiful blue color. Now, imagine that the same oceans were green. This is the intriguing possibility suggested by new research from Nagoya University in Japan.

Ever wondered why some lakes are bright blue while others are green or brown? The answer lies in the way light interacts with ...