Michele Livan is Professor of Experimental Physics at the University of Pavia in Italy. He graduated in Physics from the same institution in 1974 and started his career in experimental particle physics by taking part in the first experiment to measure the gamma ray spectrum from the decay of the ψ’at SPEAR. He was a member of the UA2 Collaboration at CERN (discovery of the W and Z bosons) and spent two years at CERN as a Senior Fellow. In 1986 he started to participate in study groups for preparation of the Large Hadron Collider experiments and he has led the Pavia group in the ATLAS experiment for more than 20 years (discovery of the Higgs boson). In the ATLAS experiment he has for some time held the role of Muon System Deputy Project Leader and Member of the Executive Board. He met Dr. Wigmans in 1987 and started to collaborate on all his R&D projects (SPACAL, RD1, DREAM and RD52) on compensating and dual-readout calorimetry. He has been Deputy Spokesperson of the DREAM andRD52 projects at CERN. He is co-author with Dr. Wigmans of two major review papers on scintillating fiber and dual-readout calorimetry. Richard Wigmans holds the J. Fred Bucy and Odetta Greer Bucy Chair in Particle Physics in the Department of Physics and Astronomy at Texas Tech University (TTU) in the USA. A native of the Netherlands, he relocated to Texas in 1992, attracted by the prospect of the superconducting supercollider under construction near Waxahachie at that time and driven by the desire to work in a teaching environment after 20 years in full-time research. The experimental particle physics group that he initiated there is now actively involved in the CMS experiment at CERN's Large Hadron Collider and in generic calorimeter R&D. In this context, Dr. Wigmans initiated and led the DREAM and RD52 projects, in which dual-readout calorimetry was developed. Since 1995, this TTU research program has been continuously funded by the US Department of Energy. Before moving to TTU, Dr. Wigmans had worked at NIKHEF (the Dutch National Institute for Particle Physics; 1975-84), where he focused primarily on WA25, an experiment studying (anti)neutrino scattering in deuterium, and at CERN in Geneva (1984-92), where he increasingly engaged in both theoretical and experimental studies of the fundamental aspects of calorimetry.