Foreword. Solar Variability and the Earth's Climate: Introduction and Overview; G.C. Reid. Solar Variability. Observations of Irradiance Variability; C. Frohlich. Observations of Variability in Cosmic Rays; G.A. Bazilevskaya. Short Term, Direct Indices of Solar Variability; J.L. Lean. Long Term Indirect Indices of Solar Variability; J. Beer. Extreme Solar Cycle Variability in Strong Lines Between 200 and 400 nm; O.R. White, et al. Data from the Precision Solar Photometric Telescope (PSPT) in Hawaii from March 1998 to March 1999; O.R. White, et al. Variations of Solar Ultraviolet Irradiance Observed by the UARS SOLSTICE -- 1991 to 1999; G. Rottman. Solar Variability Observations (Discussion Session 1a); O.R. White, G.Rottman. Physicial Causes of Solar Activity; N.O. Weiss, S.M. Tobias. Theory of Solar Irradiance Variations; H. Spruit. Reconstruction of Past Solar Irradiance; S.K. Solanki, M. Fligge. Modelling Short-term Spectral Irradiance Variations; M. Fligge, et al. Modelling Solar Irradiance Variations: Comparison with Observations, Including Line-ratio Variations; Y.C. Unruh, et al. Resonance in a Coupled Solar-Climate Model; S.M. Tobias, M.O. Weiss. A Least-squares Solution for the Effective Conductivity of the Solar Convection Zone; J.R. Kuhn, D. Georgobiani. Using Precise Solar Shape to Study the Solar Cycle; J.R. Kuhn, et al. Physical Causes of Solar Variability (Discussion Session 1b); J. Kuhn, M. Schussler. Influences. The Influence of Total Solar Irradiance on Climate; U. Cubasch, R. Voss. The Effect of UV Irradiance Variations on the Earth's Atmosphere; A. Larkin, et al. Cosmic Rays, Clouds, and Climate; N. Marsh, H. Svensmark. Influence of Solar Wind on the Global Electric Circuit, and Inferred Effects on Cloud Microphysics, Temperature, and Dynamics in the Troposphere; B. Tinsley. The Influence of the 11-Year Solar Cycle on the Stratosphere Below 30 km: a Review; H. van Loon, K. Labitzke. Amplification of the Influence of Solar Flux Variations on the Middle Atmosphere by Planetary Waves; N.F. Arnold, T.R. Robinson. The Impact of Solar Forcing on the Variability in a Coupled Climate Model; R.J. Haarsma, et al. Solar Variability and the Search for Corresponding Climate Signals; W. Mende, R. Stellmacher. Climate. Climate Observations -- The Instrumental Record; D.E. Parker, et al. Long Term Climate Records from Polar Ice; B. Stauffer. Anthropogenic and Natural Causes of Twentieth Century Temperature Change; P.A. Stott, et al. Observations of Climate Variability (Discussion Session 3a); P.A. Stott, K.P. Shine. The Sun's Role in Long-Term Climate Change; J.E. Hansen. Climate Modelling (Discussion Session 3b); R. Haarsma. Radiative Forcing of Climate Change; K.P. Shine. What can Cloud Observations tell us About Climate Variability? J.R. Norris. Cloud Formation and the Possible Significance of Change for Atmospheric Condensation and Ice Nuclei; R.G. Harrison. Solar Variability and Clouds (Discussion Session 3c); J. Kirkby, A. Laaksonen. Solar Variability and Climate: A Summary; E. Friis-Christensen. Press Release. Author Index. List of Participants. List of SSSI Volumes.