Despite only faint light from the young Sun, the early Earth enjoyed fairly equable climates. These balmy temperatures could be explained by extremely high levels of carbon dioxide and other ...

The history of life on Earth extends far beyond the dinosaurs and ancient mammals that usually come to mind when we think of fossils. Believe it or not, scientists have actually found signs of ...

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.

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 ...

Earth's oldest fossils The scientists collected 130 pounds ... who did not take part in this research. Buick studies the Archean eon, which lasted from 3.8 billion to 2.5 billion years ago ...

[7 Wild Theories on the Origin of Life] But until now, most of what researchers knew about this eon, called the Archean, has been based on a handful of fossils from shallow-water environments.

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 ...