Zichichi Challenging Questions,

Opening Lecture.- The Champions of the Universe.- Theoretical Lectures.- Dark Matter.- Polarized Electroproduction and the Spin of the Quarks inside the Proton.- Quantum Chromodynamics of Hadron Jets.- Considerations on the Moduli Space of Calabi-Yau Manifolds.- Exotic Signatures from Supersymmetry.- Baby Universes and the Cosmological Constant Problem.- Recent Ideas on the Cosmological Constant Problem.- Review Lectures.- Quantum Strings and the Constants of Nature.- The LAA Project - Second Year of Activity.- Seminars on Specialized Topics.- A Crucial Test for QCD: The Time-like E.M. Form Factors of the Neutron.- Challenges to Quantum Chromodynamics: Anomalous Spin, Heavy Quark, and Nuclear Phenomena.- Prizes and Scholarships.- Participants.