  Solar and atmospheric neutrino data require physics beyond the Standard Model
of particle physics. The simplest, most generic, but not yet unique,
interpretation of the data is in terms of neutrino oscillations. I summarize
the results of the latest three-neutrino oscillation global fit of the data, in
particular the bounds on the angle $\theta_{13}$ probed in reactor experiments.
Even though not implied by the data, bi-maximal neutrino mixing emerges as an
attractive possibility either in hierarchical or quasi-degenerate neutrino
scenarios.

Astrophysics;High Energy Physics - Phenomenology