2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48935We review bounds on neutrino properties, in particular on their masses, coming mostly from cosmology, and also from astrophysics.Plenary talk at WIN99 (Cape Town, South Africa, Jan. 99); 14 pages. It requires sprocl.styHigh Energy Physics - Phenomenologytext