Members of the Archaea comprise one of the three principal domains of living organisms in the universal phylogenetic tree of life. The other two principal domains are the Bacteria and the Eukarya. The phylogenetic tree is a theoretical representation...

At first glance, members of domain Archaea look very much like Bacteria in morphology, but biochemical and evolutionary studies have shown that they are a unique branch of life, separate from Bacteria (Eubacteria) and Eukaryotes. This was first...

Genes that code for vital cellular functions are highly conserved through evolutionary time, and because even these genes experience random changes over time, the comparison of such genes allows the relatedness of different organisms to be assessed....

Crenarchaeota Euryarchaeota Korarchaeota Nanoarchaeota...

Is there life on Mars? Why are chemical engineers so engrossed with undersea volcanoes? Will sugar provide fuel for the vehicles of the future? Why does Antarctica hold the key to butter-like spreads that can be used straight from the fridge? The answers to...

Many scientists believe that microorganisms known as Archaea are so different from either bacteria or eucarya that they represent a unique branch of life. Unlike eucarya, archaea do not have nuclei. The microorganisms also differ from bacteria in many ways. For eons, the...

The microorganisms that live in your gut could explain one of the sources of obesity, says a new study from researchers at Washington University. Bacteria live throughout the body, but some intestinal bacteria appear to be better than others at...