In mid-March 1953, Watson and Crick deduced the double helix structure of DNA. Crucial to their discovery were the experimental data collected at King's College London – mainly by Rosalind Franklin for which they did not provide proper attribution. Sir Lawrence Bragg, the director of the Cavendish Laboratory (where Watson and Crick worked), made the original announcement of the discovery at a Solvay conference on proteins in Belgium on April 8, 1953; it went unreported by the press. Watson and Crick submitted a paper entitled "" to the scientific journal "Nature", which was published on April 25, 1953. Bragg gave a talk at the Guy's Hospital Medical School in London on Thursday, May 14, 1953, which resulted in a May 15, 1953, article by Ritchie Calder in the London newspaper "News Chronicle", entitled "Why You Are You. Nearer Secret of Life."