2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40174We review new results in neutrino physics, including the latest data of the Super-Kamiokande, SNO and K2K experiments.LaTeX, 26 pages, 9 eps figures. Lectures given at the NATO ASI "Recent Developments in Particle Physics and Cosmology", June 26 - July 7 2000, Cascais, PortugalHigh Energy Physics - PhenomenologyAstrophysicsHigh Energy Physics - Experimenttext