As of 2007, it comprises 113 multi-disciplinary National Scientific Members, Associates and Observers (scientific research councils or science academies) representing 133 countries and 29 international, single-discipline Scientific Unions.
Al 2007 esso comprendeva 113 membri scientifici nazionali multi-disciplinari, associati e osservatori (consigli di ricerca scientifica o accademie scientifiche) in rappresentanza di 133 paesi e 29 unioni scientifiche internazionali mono-disciplinari.