It’s more than a poetic name: the Blue Ridge Mountains really do appear blue, thanks to the human eye and Earth’s atmosphere.

If this work is right, the oceans were green approximately as long as they’ve been blue, a relevant fact when looking for ...

NASA's images reveal Earth's deteriorating condition due to human actions, highlighting melting ice, deforestation, and ...

Earth's atmosphere is much more sensitive to ripples of radiation from the sun than scientists previously believed, new ...

Is your green my green? Probably not. What appears as pure green to me will likely look a bit yellowish or blueish to you.

UC Berkeley scientists used lasers to create a new color, “olo,” letting humans see a vivid blue-green never seen before.

For ages, Earth has been known as a blue planet, a vision largely shaped by the vast oceans that cover three-quarters of its ...