"Progress in Physical Chemistry" is a collection of recent "Review Articles" published in the "Zeitschrift für Physikalische Chemie". The aim of a "Review Article" is to give a profound survey on a special topic outlining the history, development, state of the art and future research. Collecting these Reviews the Editor(s) of "Zeitschrift für Physikalische Chemie" intend to counteract the expanding flood of papers and thereby to give students and researchers a means to obtain fundamental knowledge on their special interests. The first volume of "Progress in Physical Chemistry" is mainly focussed on intermolecular interaction, also glancing at topics that are marginally touched. Contents: M. Havenith*, G. W. Schwaab, Attacking a Small Beast: Ar-Co, a Proto-type for Intermolecular Forces; O. Dopfer, IR Spectroscopy of Microsolvated Aromatic Cluster Ions: Ionization-Induced Switch in Aromatic Molecule-Solvent Recognition; C. F. Kaminski, Fluorescence Imaging of Reactive Processes; T. Stangler, R. Hartmann, D. Willbold, B. W. König*, Modern High Resolution NMR for the Study of Structure, Dynamics and Interactions of Biological Macromolecules; M. Drescher, Time-Resolved ESCA: a Novel Probe for Chemical Dynamics; C. Donner: Kinetics of Electrochemical Phase Formation in Two-Dimensional Systems; C. Czeslik, Factors Ruling Protein Adsorption; T. Kopp, Homogeneous Ice Nucleation in Water and Aqueous Solutions