Three nearly simultaneous events around the end of the 19th century, i.e., the discovery of X‐rays by Roentgen in 1895, natural radioactivity by Antoine‐Henri Becquerel in 1896 and isolation of Radium by the Curies' in 1898 opened the nuclear era which has changed broadly the worlds of physics, biology and medicine. At the close of the 20th century, fundamental discoveries in biology at molecul...