A new study suggests that the Earth's oceans may have changed color over time and could change again in the future, depending ...

Earth’s oceans have remained blue for hundreds of millions of years, but scientists say that’s now changing. A 2019 study from MIT predicted that half of the world’s oceans could turn green ...

For ages, Earth has been known as a blue planet, a vision largely shaped by the vast oceans that cover three-quarters of its surface. But what if this wasn't always the case, and our oceans used to be ...

Earth's oceans were once green, according to a new study. Carl Sagan, the host of the popular TV show Cosmos, once described Earth as a 'pale blue dot' when explaining an image taken by Voyager 1.