associated resulting carbon dioxide emissions up to the years 2020 and 2030, the paper applies in a second stage data envelopment …

background of improved terms-of-trade, while CO2 emissions are reduced. We construct and numerically apply a two-level game … little impact on global emissions and may be welfare reducing. On the contrary, a tax jointly levied by a "climate coalition …" of major coal exporters may well leave these better off while significantly reducing global CO2 emissions from steam coal …