CERN is the world's largest particle physics laboratory. Thousands of scientists from all over the world work together here to advance our knowledge of matter, its fundamental constituents and the forces that link them. Founded in 1954, CERN was one of the first European collaborations, uniting countries that had been fighting against one another during the Second World War. The number of Member States has now grown to 22. As it pursues its fundamental research, CERN pushes technological boundaries, trains countless scientists and, through the medium of science, contributes to the dialogue between nations. More information >>.