The German radiochemists Lise Meitner (1878-1968) and Otto Hahn (1879-1968). They worked together in Berlin for 30 years. Despite her talent Meitner was a victim of more than one prejudice being both a woman and a Jew. In the 1930s they worked on uranium bombarded with neutrons initially not realising that fission was occurring. In the late 1930s Meitner's Jewishness became a threat to her safety and she left Germany for Sweden where she built up her research group. In 1939 Hahn in Germany and, a month later, Meitner in Sweden announced that they had obtained nuclear fission for the first time. Hahn was awarded the Nobel Prize for chemistry in 1944.