The scientists documented the phosphorus in early Archean limestone ... trying to unlock the processes that gave rise to early life forms: Why don't we see new life forms today?

Microfossils have a tendency to muck with our timeline of when life ... L-forms, when the latter are put in high-salinity environments that scientists think existed along coasts during the Archean ...

The Archean space rock in that impact ... Earth probably harbored only 1 or 2 percent the amount of life that it does today, Knoll says—all in the form of single-celled microbes.

In the Archean, long before rooted land plants were ... our climate has been perpetually suitable for some form of life. Inorganic processes have played a big part in this regulation, particularly ...

Previous studies of similarly aged rocks had looked only at oxygen isotope ratios, which suggested that in the Archean era (about ... been extremophiles -- life forms adapted to extreme ...

But all geologic signs point to a young planet awash in liquid water, with the first life-forms emerging ... of flowing water as far back as the Archean eon, 3.8 billion to 2.5 billion years ...

Roughly between 3.8 and 1.8 billion years ago, during the Archean eon when life was confined ... sparking the evolution of more complex life forms. But, researchers were keen to understand the ...

Life back then ... green oceans in the Archean eon starts with an observation: waters around the Japanese volcanic island of Iwo Jima have a greenish hue linked to a form of oxidized iron ...