2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/114934An overview is given of theoretical attempts to explain the matter-antimatter asymmetry in the Universe, emphasizing particularly leptogenesis and the Affleck-Dine mechanism.20 pages, no figures. Invited talk given at the World Summit on Physics Beyond the Standard Model, Galapagos Islands, Ecuador, June 22-25, 2006High Energy Physics - Phenomenologytext