Andrew M. Gordon, PhD., R.P.F. is a Professor Emeritus in the School of Environmental Sciences, University of Guelph, Canada, where he taught and researched in the broad areas of forest ecology and agroforestry systems for over 30 years. His research interests lie in the investigation of ecosystem-level processes in forests and agricultural systems that contain trees. Dr Gordon is the author and co-author of over 225 research publications in both refereed and non-refereed journals, book chapters, and technical communications. He conceptualized and edited, with Dr S. Newman, the first global book on Temperate Agroforestry Systems (CABI Pub.), now in its 3rd Edition. Dr Gordon has considerable international experience in agroforestry research, development and education in many countries, including Ghana, where he was the Director of a long-term CIDA project "Agroforestry practices to enhance resource-poor livelihoods in Ghana". He is the President and CEO of Forest Environments Universal, Inc. and the Director of U-Links (ulinks.ca), North America's only rural-based Centre for Community-Based Research. Professor Steven Newman is a senior natural resource, climate change and climate finance consultant. He has undertaken over 122 major assignments in over 63 countries. The work included managing many multi-million-pound investments in agroforestry and nature-based solutions worldwide leading to the planting of over 10 million trees. He is MD of BioDiversity International Ltd, Visiting Professor in the Agriculture Department Reading University and is part of Abacus Agriculture and is advising UK farms and estates on profitable nut tree agroforestry options. He is lead editor of the 3rd edition of the leading textbook: "temperate agroforestry systems"