On the origin of Special Relativity
  Retrospectively, in 1905, Special Relativity seemed palpably close; it was "in the air". But apparently it needed the fresh approach of an unprejudiced newcomer, Einstein, to take the final step. I report, in a pedagogical fashion, on the scientific background that triggered the formulation of Special Relativity and also on the role of Lorentz and Poincare. 
Domenico Giulini