2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/135698This article reviews the arguments why extra dimensions provide a unique opportunity for progress on the cosmological constant problem, and updates the status of -- and the objections to (with replies) -- the specific proposal using supersymmetric large extra dimensions (SLED).Contribution to the proceedings of the Rencontres de Moriond "Electroweak Interactions and Unified Theories", March 2007. 8 pagesHigh Energy Physics - Phenomenologytext