2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46638I review recent theoretical work on top-quark physics within the standard model, beyond the standard model, and at the Planck scale.9 pages, LateX, uses stwol.sty, 3 ps figures included. Plenary talk presented at the 28th International Conference on High Energy Physics, July 25-31, 1996, Warsaw, PolandHigh Energy Physics - Phenomenologytext