Researchers have found that Earth’s first oceans may not have been blue at all like today. Instead, they may have gleamed in ...

But while lifeless during that time, the planet was already covered by vast oceans dotted with hydrothermal vent systems that ...

The study sheds light on life during the Great Oxidation Event, a pivotal time roughly 2.4 billion years ago when ...

Scientists have discovered evidence that Earth's oceans were once green, hinting that this could be a marker of early life, ...

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.

Imagine the world’s oceans with their beautiful blue color. Now, imagine that the same oceans were green. This is the intriguing possibility suggested by new research from Nagoya University in Japan.

But the reason it’s thought that life on Earth may ... organisms called Cyanobacteria. Conservation of energy. videoConservation of energy Professor Brian Cox explains the first law of ...