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 ...

Researchers headed by a team at Massachusetts General Hospital have, for the first time, shown that reduced oxygen intake, or “oxygen restriction,” is associated with longer lifespan, and reduced ...

A number of hypotheses have been used to explain how free oxygen first accumulated in Earth’s atmosphere some 2.4 billion years ago, but a full understanding has proven elusive. Now a new model offers ...