2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157923This is an elementary account of neutrinos as Majarona particles and the search for neutrinoless double beta decays. It also includes some more ideas about neutrinos.Keynote address at Workshop on Neutrinoless Double Beta Decay (NDBD07) at Tata Institute of Fundamental Research, Mumbai, October 2007; 8 pages, no figuresPopular PhysicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext