  I summarize the status of three--neutrino oscillations that follow from
combining the relevant world's data. The discussion includes the small
parameters Delta_m-sol/Delta_m-atm and \sin^2\theta_{13}, which characterize
the strength of CP violation in neutrino oscillations, the impact of
oscillation data on the prospects for probing the absolute scale of neutrino
mass in \nbb and the robustness of the neutrino oscillation interpretation
itself in the presence of non-standard physics. I also comment on the
theoretical origin of neutrino mass, mentioning recent attemps to explain
current oscillation data.
