Solar neutrinos - present and future, E. Fiorini; solar neutrinos - what we have learned, J. Bahcall; the laser interferometer gravitational wave observatory, S. Whitcomb; exact results in four-dimensional SUSY field theories, N. Seiberg; novel properties of spacetime in string theory - mirror manifolds and their implications, B. Greene; strings, cosmology ... and a particle, G. Veneziano; observing the early universe with the cosmic backgroup explorer (COBE), E.L. Wright; search for MACHOs, D. Bennett; the quasi steady state cosmology and its interface with particle physics, J.V. Narlikar; non-commutative geometry and conformal field theory, J. Frohlich; the black hole puzzle in two dimensions, A. Strominger; how string theory may solve the puzzle of black holes, L. Susskind; scenes from quantum gravity, A. Ashtekar; fundamental constants from bottom and charm decays, S. Stone; our present understanding of CP violation, J. Rosner; electroweak physics and hunting for the top quark with CDF, H. Frisch. (Part contents).