"Prof. Marco Antonio Chaer do Nascimento earned a B.Sc. degree in Industrial Chemistry from the National School of Chemistry of the University of Brazil. He received his Master´s degree in Chemical Physics in 1975 and Ph. D, also in Chemical Physics, in 1977 from the California Institute of Technology (Caltech, USA). He is currently a full professor in the Institute of Chemistry of the Federal University of Rio de Janeiro. Since 2000, he is a member of the Brazilian Academy of Sciences. Prof. Chaer has won several awards that include the National Order of Scientific Merit at the class of Commander (2005) of the Federal Governmet of Brazil, Walter Baptist Mors Medal (2011) and Simão Mathias Medal, both offered by the Brazilian Chemical Society, Augusto Araújo Lopes Zamith Medal (2002) of the Institute of Chemistry of the Federal University of Rio de Janeiro, ‘Scientists of our State’ Prize (1999) of the Secretariat of Science and Technology of the State of Rio de Janeiro. He is a member of the scintific committee of World Association of Theoretical and Computational Chemists (WATOC), a representative member of Brazil in the International Society of Physical Chemistry. He served as guest-editor in several international periodicals like Journal of Molecular Structure, Theoretical Chemistry Accounts, Journal of Molecular Modeling and as member of editorial body in many others. Prof. Chaer has published more than 150 peer-review papers and his reserach interests include atomic and molecular structure and spectroscopy, theory of chemical bonding, application and development Computaional molecular modelling techniques. Prof. Chaer is a First-Class Research Fellow of The Brazilian National Council for Scientific and Technological Development (CNPq)".