Dr. Fernando López-Valdez is currently a Full Professor at the Research Centre for Applied Biotechnology at the Instituto Politécnico Nacional, in Mexico. He has a Bachelor degree in Chemical Engineering from the Universidad Veracruzana, M.Sc. and Ph.D. in Biotechnology from the CINVESTAV, México. For about 18 years he has been acting as postgraduate professor, teaching Physical-Chemistry, Chemistry, Agricultural Biotechnology, Environmental Biotechnology classes, among others. He has been published about 20 articles with high impact peer-reviewed journals, he also published five book chapters and one book as editor. He has acted as reviewer and editor for over 17 Journals, and co-Editor for an International Symposium (Biotechnology Summit 2012, 2014 & 2016). Currently, he conducts research in the areas of Environmental & Agricultural Biotechnology on topics as wastewater sludge as organic fertilizer, their ashes (as mineral fertilizers) and nanoparticles, as well their effects on the soil properties and growth plants, under laboratory or greenhouse conditions. Dr. Fabián Fernández-Luqueño is a Full Professor at Center for Research and Advanced Studies of the National Polytechnic Institute, Mexico. He received his Bachelor degree in Engineering in Soil Science from Universidad Autónoma Chapingo, Mexico, a M.Sc. in Edaphology from Colegio de Postgraduados, Mexico and a Ph.D. in Biotechnology from Cinvestav, Mexico. His professional expertise has been in the academic sector as a Full Professor and Scientific Coordinator at Universidad Tecnológica de Tulancingo and recently as a Full Professor and Academic Coordinator at Cinvestav Saltillo. His research area is the plant-environment interactions, but he is also interested in the effect of nanoparticles on crops, soils, and microorganisms. Dr. Fernández-Luqueño has authored and co-authored more than 35 scientific papers in international journals, eleven books, and twelve book chapters. Besides, he has acted as a reviewer for high impact peer-reviewed journals.