.nullnonmarkingreturn “.null8.null.null4.null2012.null7.null PROGRESSUS INQUISITIONES DE MUTATIONE CLIMATISVo l. 8 No. 4July 2012doi10.3969/j.issn.1673-1719.2012.04.008.nullnonmarkingreturn , .nullnonmarkingreturn. .nullnonmarkingreturn “ .nullnonmarkingreturn .null 2012-02-28.nullnonmarkingreturn .null.nullnonmarkingreturn “ 2 China Academy ofCivil Aviation Science and Technology, Beijing 100028, ChinaAbstract EU would include all flights from and to EU airports into EU Emission Trading System ETS since Jan.1st, 2012 in the light of Directive 2008/101/EC. This paper elaborates the relevant EU legislation and policy andpoints out that EU ETS is a typical “cap and trade” system to limit the greenhouse gas emissions by means ofregulating emission cap and trading allowances. Based on such an elaboration, this paper concludes that EU’s unilateralextension of EU ETS to international aviation will strengthen the climate change initiative to benefit EU economicinterests in the end, and establish the monetary power system of EURO by accelerating improvement of EU’s carbonmarket. As well, such an action will not only induce legal conflicts with United Nations Framework Convention onClimate Change UNFCCC and the Kyoto Protocol, but also constrain the growth of the international air transportowing to buying extra allowances, challenge the capacity building in developing countries through Measure, Reportand Verify MRV and to some extent impact the UNFCCC negotiations on the sectoral approach.Key words EU emission trading system; civil aviation; greenhouse gas.nullnonmarkingreturn .nullnonmarkingreturn “.nullnonmarkingreturn “nonmarkingreturn.null.nullnonmarkingreturn “*