Avogadro

Martin Kamen Martin Kamen- Obituary for the scientist who was one of the discoverers of the isotope carbon-14 and is also remembered as a victim of Cold War era witch hunts. From the Guardian. Martin Kamen, 89, a Discoverer of Radioactive Carbon-14, Is Dead Martin Kamen, 89, a Discoverer of Radioactive Carbon-14, Is Dead- New York Times obituary.