The Royal Society Centre for History of Science is hosting its inaugural conference on 22/23 April to explore the impact that the Society has had on science in the 20th century. Both professional historians and professional scientists will be contributing innovative papers across a wide range of themes. The current programme and abstracts, and a registration form for those planning to attend, can be found at http://royalsociety.org/The-Royal-Society-and-Science-in-the-20th-Century/