2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/171564Outline: 1. Introduction, 2. Confinement, chiral dynamics and light scalar mesons, 3. Chiral shielding of σ(600), chiral constraints, σ(600), f_0(980) and their mixing in ππ\toππ, ππ\to K\bar K, and ϕ\toγ\pi0\pi0, 4. The ϕmeson radiative decays on light scalar resonances. 5. Why a0(980) and f0(980) are not the K\bar K molecules. 6. Light scalars in γγcollisions. Evidence for four-quark components of light scalars is given. The priority of Quantum Field Theory in revealing the light scalar mystery is emphasized.9 pages, 8 figures, Invited talk at QUARKS'2008, Sergiev Posad, Russia, May 23-29, 2008High Energy Physics - PhenomenologyHigh Energy Physics - ExperimentNuclear Theorytext