Star formation in galaxies at low and high-z; Nuclear and extended multi-wavelength characterization of starburst and luminous infrared galaxies (LIRGs) at all spatial scales: from giant molecular clouds and dusty tori to large-scale kpc emission and the circum-galactic medium; Galaxy interactions and mergers, and their evolution with redshift; Interstellar medium and environment in (U)LIRGs and galaxy compact groups ; AGN activity and its connection with star formation processes; Modeling of the spectral energy distributions of star-forming regions, galaxies and AGNs.