2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2495This paper presents a brief overview of some recent advances in numerical radiative transfer, which may help the molecular astrophysics community to achieve new breakthroughs in the interpretation of spectro-(polarimetric) observations.4 pages, 2 figures, to appear in the proceedings of "The Promise of FIRST" symposium, Toledo, 12-15 December 2000Astrophysicstext