VoxEU Column Assessing the economics of stringent climate policies: The risk of selection bias Richard Tol Massimo Tavoni 19 Dec 2009 Environment
VoxEU Column The EU 20/20/2020 targets Thomas Rutherford Richard Tol Christoph Böhringer 4 Dec 2009 Environment
VoxEU Column How much greenhouse gas emission abatement is enough? Richard Tol 23 Nov 2009 Environment