For decades, scientists have believed that complex life began when two very different microbes joined forces, eventually ...

The most widely accepted scientific explanation for the arrival of all complex life on Earth has had an unsolved mystery at its heart. According to the theory, all plants, animals and fungi, known ...

Scientists propose that eukaryotes formed when an Asgard archaeon entered into a close partnership with an alphaproteobacterium. Over time, the two organisms became permanently linked. The ...

Researchers reveal Prototaxites, a giant Devonian fossil, was not a fungus or plant but a unique extinct lineage.

Ancient fossils are revealing unexpected chemical survivors, challenging long-held assumptions about how biological carbon is ...

Scientists Discover a New Form of Life Standing 26 Feet Tall ...