Prof. E.J. Lenardao has pioneered studies on green procedures to prepare organochalcogen compounds (sulfur, selenium and tellurium-containing). He has made major contributions in the synthesis of vinyl chalcogenides and the chemical modification of natural occurring compounds by including selenium and sulfur in their structures, affording boosted antioxidant semi-synthetic molecules. Since 2007, Prof Lenardao is a researcher of The Brazilian Council for Scientific and Technological Development (CNPq) He is Fellow of RSC, and a Member of the International Board of the Selenium and Sulfur Redox and Catalysis Network and of the International Conference on the Chemistry of Selenium and Tellurium. Currently, he is Associate Editor of Current Chemical Biology, Academic Editor of PeerJ Journal, and a member of the editorial board of Asian Journal of Organic Chemistry, Current Green Chemistry, Arkivoc, InfoAnalitica, and Current Catalysis. Studies on new chalcogen-containing reduced risk insecticides and antibiotics are among his present research interests. He has a stable position as an organic and general chemistry professor at Federal University of Pelotas (UFPel), Brazil (since 1997). In the last 18 years, he has dedicated himself in both, teaching and research in green and sustainable chemistry. Prof Lenardao is one of the leaders of the Clean Organic Synthesis Laboratory, with 6 professors and 40 students/researchers (undergraduate, PhD, master, and postdocs).