By the end of the century, a shrinking atmosphere could create a minefield for satellites, like those deployed by SpaceX's ...

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

Paleontologist Riley Black traces the cooperation among plants, animals, and ecosystems in “When the Earth Was Green.” ...

For most of human history, Earth has been known as the “Pale Blue Dot,” a term popularized by astronomer Carl Sagan when referring to the iconic 1990 image taken by Voyager 1. But for billions of ...

Imagine a world where the vast oceans glimmered not in deep blue, but in brilliant green. A time when Earth’s seas, ...

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

This stunning photo was taken on January 29, 2025, from 265 miles (425 km) above the Pacific Ocean. Pettit, a seasoned ...

For a long stretch of Earth’s history, our planet might have looked green from a distance, instead of the pale blue dot we know today. Earth’s green period, which lasted from around 3 billion ...

While it may seem crazy, the idea that millions of years ago the Earth looked purple is gaining traction. Yes, you read that right, aliens might well have known us as ‘The Purple Planet’.