I am interested in galaxy evolution and formation. I use deep color-magnitude diagrams (mainly from the Hubble Space Telescope, HST), from the near UV to the near IR, to recover the star formation history of galaxies within 20 Mpc (mostly dwarf galaxies). I'm also interested to the general process of star formation. I studied several HII regions in the Magellanic Clouds (e.g. NGC346, 30 Doradus, NGC602, etc..) using main sequence massive stars, He-burning and pre-main sequence stars. I'm involved in the HST projects LEGUS (https://legus.stsci.edu/) and HTTP (https://archive.stsci.edu/prepds/30dor/).