The earliest lifeforms, cyanobacteria, appeared around 4 billion years ago. These organisms, now known as algae, were among the first to engage in oxygenic photosynthesis.

Instead, they were a striking shade of green, shaped by ancient microbial life and the chemical composition of early seas.

Everyone knows the Earth has constantly evolved over the course of billions of years, and the natural landscapes we see today ...

Ancient oceans, which were heavy on iron, interacted differently with light wavelengths, retracting green light into the ...

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 ...

New research suggests tiny electrical charges in water droplets could have fueled the chemical reactions that led to life.

For centuries, Earth’s oceans have always been blue. However, research states that oceans will turn green again soon. By again, I mean, once upon a time the oceans used to be green; now, they are blue ...

Critics of this hypothesis argue that the oceans were—and still are—too ... an electrical current to a mixture of water and Earth’s early inorganic gases, including methane, ammonia, and ...

Earth was so cold at the time that the oceans were frozen all the way to the ... all of which may have contributed to the early development of life, the University of Portsmouth said in a release.

Despite such early abundance, making water way back ... One enigma Whalen still wonders about is the provenance of the water in Earth’s oceans. “Somebody asked me if it’s possible some ...