A team led by Brett Baker at the University of Texas at Austin has found that some Asgard archaea, the ancient microbial group most closely related to all complex life on Earth, carried the molecular ...

New research suggests that certain bacteria began using oxygen nearly one billion years earlier than previously thought. The findings could profoundly reshape our understanding of how life evolved on ...

Bacteria may have adapted to oxygen well before Earth’s atmosphere was saturated with it, according to a new study. Researchers who traced microbial evolution over billions of years – using machine ...