The NATO ARW Advanced Combustion and Aerothermal Technologies: Environmental Protection and Pollution Reductions, was held in Kiev, May 2006. The workshop was Co-Directed by Profs. N. Syred and A.Khalatov, winners of the NATO Scientific Prize 2002, and was organized by the Institute of Thermophysics (Ukraine) and Cardiff University, UK. The primary Workshop objectives were to assess the existing knowledge on advanced combustion and aerothermal technologies providing reduced environmental impact, to identify directions for future research in the field, and to promote the close relationships and business contacts between scientists from NATO and Partner countries.