2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37575The hadronic events collected by LEP between 1989 and 2000 have changed dramatically our understanding of QCD, which has now been established as a part of the Standard Model. Still in many sectors (nonperturbative in particular) science analysis needs to be completed, and some new studies are just starting.4 pages; invited talk at the IFAE, Lecce (Italy), May 2003High Energy Physics - Experimenttext