More than 3.5 billion years ago, the Earth was not the hospitable world we know today. The atmosphere lacked oxygen, the seas ...

New method reveals chemical signs of early microbial life in ancient Earth rocks, showing photosynthesis evolved much earlier ...

These traces of bacteria "are the oldest fossils ever described. "Those are our oldest ancestors," said Nora Noffke, a biogeochemist at Old Dominion University in Norfolk who was part of the group ...

The rocks seen here along the shoreline of Lake Salda in Turkey were formed over time by microbes that trap minerals and sediments in the water. These so-called microbialites were once a major form of ...

Faint ridges in Moroccan rock have revealed an ancient mystery: signs of microbial life deep below the sea surface, where ...

When we imagine the search for life on Mars, we often picture high-tech rovers scanning dusty landscapes or orbiters analyzing strange rock formations from above. But what if the key to discovering ...

A remarkably preserved horseshoe crab fossil from North America offers rare insight into some of the earliest known cases of animal disease in a Late Carboniferous swamp – more than 300 million years ...

If I'm understanding this correctly, this guy has found evidence of bacteria fossils that are not of earthly origins. If so, why is this not all over the news? Not as exciting as Charlie Sheen? I ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...