In the vast and often unseen world of microscopic life, a recent discovery may force scientists to rethink what it means to ...

It has genes for ribosomes, tRNAs, and mRNAs. These components are the scaffolding of life: the tools by which cells read ...

Single-celled organisms called archaea aren't generally thought to cause human disease, but one species has been implicated in colorectal cancer ...

Scientists have discovered Sukunaarchaeum mirabile, a unique archaeon residing within marine plankton, challenging traditional definitions of life. Th ...

Because they rely on hosts for a majority of functions, viruses aren’t considered alive. But entities like ‘Sukunaarchaeum ...

LUCA sits at the root of the evolutionary tree, where two great domains of life—Bacteria and Archaea—split. This ancient microbe holds clues about how life first gained a foothold on Earth.

Archaea are a distinct domain of life—along with bacteria and eukaryotes (i.e., organisms with a cell nucleus such as animals, plants and fungi).

Archaea—one of the three primary domains of life alongside bacteria and eukaryotes—are often overlooked and sometimes mistaken for bacteria due to their single-celled nature and lack of a ...

Archaea—one of the three primary domains of life alongside Bacteria and Eukaryota—are often overlooked and sometimes mistaken for bacteria due to their single-celled nature and lack of a nucleus. Yet, ...

In 2015, researchers examining deep-sea sediments near the underwater volcano Loki discovered gene fragments indicating a new ...

The division of all living organisms into the three domains of bacteria, archaea and eukaryotes did not hold up to this surprising discovery.