Ancient Enzyme Reborn: 3.2-Billion-Year Nitrogenase Sheds Light on Life's Origins
UW–Madison researchers resurrected a 3.2‑billion‑year‑old nitrogenase enzyme and tested it in modern microbes to study its function and isotope fingerprints, validating ancient biosignatures in rocks and advancing the search for life beyond Earth through NASA-backed astrobiology research.