The following essay is by Pilar Carolina Villar, Professor of Environmental Law at Federal University of São Paulo. She can be reached at pcvillar [at] gmail.com. The signing of the Guarani Aquifer Agreement (Portuguese / Spanish / English [unofficial]) on August 2, 2010, by Argentina, Brazil, Paraguay and Uruguay was received by the water community … Continue reading Countdown to the Guarani Aquifer Agreement coming into force: will it be effective in promoting transboundary groundwater governance?