In 1977, Woese and Fox proposed the Archaea as a new domain of life and that the tree of life is divided into three branches — the Eukarya, Bacteria and Archaea. Although a three-domain tree was ...
Biologists are confronting a problem they thought they had mostly solved: what, exactly, counts as life. A wave of ...
From Quanta Magazine (find original story here). The tree of life just got another major branch. Researchers recently found a certain rare and mysterious microbe called a hemimastigote in a clump of ...
Biologists are quietly rewriting what it means to be alive, and the human body has become one of their strangest frontiers.
All species on Earth, both living and extinct, are related. We know this because of a biological tool called the tree of life. This "tree" takes the form of a diagram that maps the relationships ...