Dr. Addy Majewski, with a Ph.D. in chemical engineering from Wroclaw University, Poland, possesses extensive expertise in heat transfer, heat exchangers, evaporation, and emission control technologies. Having worked in Canada since 1991, he contributed to the development of diesel particulate filters and emission control catalysts for various engine applications. As the president of Ecopoint Inc., a consultancy specializing in engine emission control, and the founder of DieselNet.com, an internet-based resource on clean engine technologies, Dr. Majewski is a licensed Professional Engineer in Ontario and a member of the SAE. His impactful work includes numerous technical publications and consultancy reports on emission control. Hannu Jääskeläinen holds a M.Eng. degree in mechanical engineering from the University of Toronto. His career working with internal combustion engines spans over 30 years. In addition to his current role focusing on fuels and engine technology for DieselNet.com, he consults on combustion, emissions, and fuels topics, and is a member the Canadian General Standards Board (CGSB), Middle Distillate Fuels and Gasoline and Alternative Automotive Fuels Committees. Early in his career, he carried out experimental research and development work with internal combustion engines at the University of Toronto. His research and consultancy experience has included work with diesel, gasoline, and alternative fuels such as biodiesel, natural gas and hydrogen for a wide variety of applications. He has authored numerous publications and reports.