2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45023The experimental and astrophysical status of neutrino masses is reviewed with an emphasis on the cosmologically interesting regime.Talk given at the Les Houches Summer School "Cosmology and Large Scale Structure", 8 pages, RevTeX 3.0, MPI-Ph/93-81High Energy Physics - Phenomenologytext