2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41715I will give here an overview of the present observational and theoretical situation regarding the question of the matter-antimatter asymmetry of the universe and the related question of the existence of antimatter on a cosmological scale. I will also give a simple discussion of the role of CP violation in this subject.Text of Keynote Paper of the XIVth Rencontres de Blois 2002 on Matter-Antimatter Asymmetry, Blois, France, June, 2002, to be published in the proceedings, ed. J. Tran Thanh Van, 10 latex pages, 5 eps figuresHigh Energy Physics - PhenomenologyAstrophysicstext