The complex life forms, however, did not spread globally from the "restricted nature" of the underwater region and eventually died out, according to the study. "While the first attempt failed to ...

Ten years ago, nobody knew that Asgard archaea even existed. In 2015, however, researchers examining deep-sea sediments discovered gene fragments that indicated a new and previously undiscovered form ...

Scientists reveal the role of hidden microbes called Asgard archaea in the origins of complex life, challenging long-held ...

Once simple life emerged, it gradually evolved into more complex forms, eventually giving rise to animals and plants. But that doesn’t seem to be what happened. After simple cells first appeared ...

However, researchers who study ancient Earth were ... nutrient cycles and provided emerging life with the boost it needed to evolve into more complex forms. “The idea that glacial debris from ...

Life on Earth had to begin somewhere, and scientists think that “somewhere” is LUCA—or the Last Universal Common Ancestor.

How do scientists study and classify life-forms? How can we understand the complex evolutionary connections between living organisms? Woese's breakthrough was momentous for at least three reasons.

Discover the connection between volcanic events and the rise of Earth's oxygen levels that enabled complex life to thrive.

"The disappearance of oxygen will wipe out not only animals and plants but also entire ecosystems that rely on aerobic life ... the study said. Despite the grim outlook for complex life forms ...