Earth's oceans, known for their deep blue hue, could one day undergo color shifts, say scientists. A report based on a study published in Nature suggests that our oceans have not always been blue, and ...

People travel from around the world to see the fall foliage in Maine's Acadia National Park Credit: John Greim/LightRocket via Getty Images Earth is made up of a kaleidoscope of colors—from the lush ...