Frank Rosillo-Calle is an Honorary Senior Research Fellow, Imperial College London, UK. He has over 40 years research experience on biomass energy, with particular interest in Brazil. He has been involved in many international research projects and has published extensively in scientific journals and books e.g., Contributor/Editor of Energy from Alcohol (1983), The Charcoal Dilemma (1996), Industrial Uses of Energy from Biomass (2000), Biomass Energy Handbook (2007 and 2015). He has taught biomass/biofuel energy courses at various universities in Brazil, Spain, UK, and Thailand. (*) In publications, the author’s name appears either as Frank or Francisco.