| 1975-81 | Represented Italy in the Expert Group of the Conference Committee on Disarmament of United Nations. |
| 1964-72 | Deputy Secretary General of International Union of Geodesy and Geophysics. |
| 1964-72 | Member of the committee on data for Science and Technology of the International Council of Scientific Union. |
| 1968-76 | Chairman of the Italian Committee for data for Science and Technology. |
| 1968-72 | Member of Physics Committee of National Research Council of Italy. |
| 1971-79 | Member of the Committee on Science Teaching of the International Council of Scientific Unions. |
| 1982-87 | Project Director of NASA research contracts. |
| 1997-2018 | Chairman of the environment Commission of Accademia Nazionale dei Lincei where he is presently the Dean. |
| 2000 | Consultant of Office of Comptroller of the Currency, Washington. |
| 2000-02 | Consultant of Banca d'Italia. |
| 2009 | Consultant of Plains Exploration and Production Company. Houston TX. |