If we discover a green-tinted world, it could mean that early photosynthetic organisms are thriving there, just like they once did on ancient Earth. Earth’s green oceans may be long gone, but ...

Our climate seems to be more sensitive to greenhouse gas emissions than some researchers had hoped, meaning the world will ...

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 ...

Earth’s oceans may not have always been as brilliantly blue as they are today. In fact, there may have been a time when they weren’t blue at all. According to researchers at Japan’s Nagoya ...

The Earth's oceans used to be green — and could one day turn purple, scientists say. Opinion. By Cédric M. John published 13 April 2025 Earth's oceans could one day turn purple.

At Earth Day on the Green, Sunrise Newark brought pH strips and invited attendees to test the pH levels of their water bottles while checking for harmful chemicals like lead and mercury. “We want to ...