Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites

Ten years after the ?rst ESO Workshop on light elements, and ?ve years after the IAU in conference in Natal (Brazil) on the same subject, we felt that it was time to have a new conference on this topic: a wealth of new observational data have become available from the 8-meter telescopes and in particular from the VLT, and, at the same time, in the last years new theoretical roads have also been in...