Magnetic monopole searches in the cosmic radiation
  There has been a big effort in the past twenty years with at least a couple of generations of experiments which searched for supermassive GUT magnetic monopoles in the cosmic radiation.   Here a short review of these searches is given, together with a brief description of the theoretical framework and of the detection techniques. 
Ivan De Mitri (University of Lecce and INFN Sezione di Lecce, Italy)