2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48700After some generalities on neutrino oscillations and on neutrinos, the recent experimental results presented by Soudan 2, MACRO and SuperKamiokande at the Neutrino'98 conference are summarized and discussed.15 pages, 7 figures. Lecture at the Fifth School on Particle Astrophysics, Trieste 29 june-10 july 1998High Energy Physics - Phenomenologytext