Introduction (G. Cini Castagnoli). Our present knowledge of the heliosphere (D.S. Intriligator). Solar radiation in the near-Earth environment (H. Friedman). Theory of solar variation (D.O. Gough). Evidence for solar variability from historical records (F.R. Stephenson). The history of the Earth's rotation as determined from eclipses and occulations (F.R. Stephenson). Historical supernovae (F.R. Stephenson). Radioisotopes in natural archives: information about the history of the solar-terrestrial system (J. Beer). Radiocarbon in tree rings (H.E. Suess). Stability of the cyclic behaviour of the Sun in the past millennia (G. Cini Castagnoli). Theoretically expected variations in the terrestrial cosmic-ray production rates of isotopes (D. Lal). Interesting geophysical applications of terrestrial long-lived cosmogenic stable and radioactive isotopes (D. Lal). Time series analysis with power spectrum and cyclograms (M. Galli). Time series, radiocarbon and varves (C.P. Sonett). Geomagnetism and palaeomagnetism: an outline (S.K. Runcorn). Thermoluminescence in sediments: a tool for environmental investigations (G. Cini Castagnoli and G. Bonino). The global carbon cycle, a part of the Earth system (H. Oeschger). Les principales sources solaires de l'activite geomagnetique et leur relation au cycle a l'echelle seculaire (J.-P. Legrand and P.-A. Simon). Climate of the Hudson Bay region and effects of solar activity, volcanic dust and lunar nodal tidal signal (J. Guiot). Cosmic rays and solar activity since 1955 (M.A. Shea and D.F. Smart). Large-scale interplanetary perturbations and their influence on the galactic cosmic-ray modulation (N. Iucci, M. Parisi, M. Storini and G. Villoresi). The thermal balance of the Earth (O. Vittori).
