Charles Mueller is Emeritus Professor of Economics at the University of Brasilía. He has an extensive publication record and policy experience in agricultural economics, environmental economics and development economics. Prof Mueller completed his undergraduate studies at the University de São Paulo, and his Master and PhD at Vanderbilt University. He joined the University of Brasília in 1972. From 1986 to 1989 he was Director and President of IBGE, Brazil’s statistical office.