Dr. Nadia Morin-Crini is an analytical chemist at the University of Bourgogne Franche-Comté, Besançon, France. Her research interests include the extraction and analysis of chemicals from various solid and liquid environmental matrices. She is responsible for a technological platform for the study of old and present environments. She has published more than 130 papers in peer-reviewed scientific journals. Dr. Eric Lichtfouse is a professor of environmental chemistry and scientific communication at Aix-Marseille University, France and Xi’an Jiaoting University, China. He has invented carbon-13 dating based on the discovery of temporal pools of organic molecules in soils. He is Chief Editor and co-founder of the journal Environmental Chemistry Letters, and the book series Sustainable Agriculture Reviews and Environmental Chemistry for a Sustainable World. He has published the book Scientific Writing for Impact Factor Journals. Dr. Grégorio Crini is an environmental polymer scientist at the University of Bourgogne Franche-Comté, Besançon, France. His research activities focus on the design of new polymer networks and the environmental aspects of polysaccharide chemistry. He has published more than 210 papers in international journals and is a highly cited researcher with an h-index of 38 and more than 11, 800 citations.