Scientists trace an ancient microbe, Asgard archaea, that gave rise to humans, animals, and plants more than 2 billion years ...

Scientists have found further evidence to support the idea that the primary two domains of life, the Archaea and Bacteria, are separated by a long phylogenetic tree branch and therefore distantly ...

Researchers investigate into the various lineages of Asgard archae, and determine one related to Hods as the ancestor of ...

In 1977, Woese and Fox proposed the Archaea as a new domain of life and that the tree of life is divided into three branches — the Eukarya, Bacteria and Archaea. Although a three-domain tree was ...

Four billion years ago, Earth was violent, hot, and unstable. Yet new research suggests that by then, life had already ...

A family tree showing representatives of the major groups (phyla) of microbes in different colors. Names in red are the first 56 genomes sequenced for the Genomic Encyclopedia of Bacteria and Archaea.

Earth’s hot springs and hydrothermal vents are home to a previously unidentified group of archaea. And, unlike similar tiny, single-celled organisms that live deep in sediments and munch on decaying ...