2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41725The self-tuning solutions of the cosmological constant is reviewed, with the emphasis on the recent attempts in extra dimensional gravity with a brane boundary.LaTeX file of 15 pages, including figures. "5th Int. UCLA Symposium on Sources and Detection of Dark Matter and Dark Energy in the Universe", Marina del Rey, CA, 20-22 Feb. 2002. SNUTP-02/023High Energy Physics - Phenomenologytext