Archaea are a major domain of prokaryotic microorganisms characterized by unique molecular and biochemical features distinguishing them from Bacteria and Eukarya. Their cell membranes typically ...

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 ...

A new international study warns that reproductive health in space is no longer a theoretical concern and that questions about fertility and pregnancy should be pressing concerns. As commercial ...