This book presents a “snapshot” of the most recent and significant advances in the field of cluster physics. It is a comprehensive review based on contributions by the participants of the 2nd International Symposium on Atomic Cluster Collisions (ISACC 2007) held in July 19–23, 2007 at GSI, Darmstadt, Germany. The purpose of the Symposium is to promote the growth and exhange of scientific information on the structure and properties of nuclear, atomic, molecular, biological and complex cluster systems studied by means of photonic, electronic, heavy particle and atomic collisions. Particular attention is devoted to dynamic phenomena, many-body effects taking place in cluster systems of a different nature — these include problems of fusion and fission, fragmentation, collective electron excitations, phase transitions, etc. Both the experimental and theoretical aspects of cluster physics, uniquely placed between nuclear physics on the one hand and atomic, molecular and solid state physics on the other, are discussed.Contents:Clustering Phenomena at Nuclear and Subnuclear ScalesStructure and Properties of Atomic ClustersElectron, Photon and Ion Cluster CollisionsClusters on a SurfacePhase Transitions, Fusion, Fission and Fragmentation in Finite SystemsClusters in Laser FieldsClustering Phenomenon in System of Various Degrees of ComplexityStructure and Dynamics of BiomoleculesFrom Biomolecules to Cells and System BiologyReadership: Researchers in physics, chemistry, biophysics, and materials science, both academic and professional.