Prof. Pimentel graduated in Agronomy at the Federal Rural University of Rio de Janeiro, Brazil, in 1977. He then joined the research group of Prof. Vieira da Silva at the University of Paris 7 (Jussieu), Paris, France. He received his Ph.D. degree in 1985 at the same institution. In 1988, he was approved in a concurs of Associate Professor at the Federal Rural University of Rio de Janeiro. In 1994, he passed another Concurs and obtained the position of Full Professor at the same University. He did one year of sabbatical leave (1999-2000) supervised by Dr. Long at the University of Illinois, U.S., working on the FACE programs with the GHG effects on soybean and corn. He has published more than 60 research articles, with more than 3000 citations in Web of Science, two books for graduated programs on agriculture in Brazil, and created two new varieties of pearl millet for agriculture.