Buick studies the Archean eon, which lasted from 3.8 billion to ... the Apex Chert structures to be cyanobacteria-like fossils, has noted that he and a colleague have prepared a response to ...

Those fossils—the squiggly, microscopic remains of organisms that subsisted on methane—broaden the scope of what habitats were suitable for life on Earth during the Archean Eon. Life ...

A team of scientists from the University of Cincinnati discovered fossils in two separate locations that appear to be somewhere between 2.5 and 3.5 billion years old, from the Archean Eon.

The Archean Eon (4–2.5 million years ago) is the second of Earth’s four major geologic eons, a time when the planet was mostly covered by oceans extending far deeper than those found today.

Buick studies the Archean eon, which lasted from 3.8 billion to ... the Apex Chert structures to be cyanobacteria-like fossils, has noted that he and a colleague have prepared a response to ...

Closer to the present, other rainstorms eroded the overlying tuff, exposing a fossil record of raindrops from the Archean eon, and may now have revealed the density of early Earth's atmosphere.

Scientists have found the oldest physical evidence for life on earth in the fossils of Greenland rocks that are 3.7 billion years old. The newly discovered fossils are 220 million years older than ...