But while lifeless during that time, the planet was already covered by vast oceans dotted with hydrothermal vent systems that ...
Everyone knows the Earth has constantly evolved over the course of billions of years, and the natural landscapes we see today ...
It seems as if Earth's atmosphere is incredibly thin, wrapped tightly around our planet. In fact, the atmosphere consists of multiple layers, with some scientists of the opinion that the atmosphere ...
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.