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Conclusion: The system we advocate is flexible enough to adapt to changing political, economic and climate circumstances. Most importantly, we believe that the system we have designed although simple in concept, solves many of the insurmountable problems of the Kyoto Protocol and delivers an outcome in which global emissions will be lower than otherwise would be the case.

Conclusion: The system we advocate is flexible enough to adapt to changing political, economic and climate circumstances. Most importantly, we believe that the system we have designed although simple in concept, solves many of the insurmountable problems of the Kyoto Protocol and delivers an outcome in which global emissions will be lower than otherwise would be the case.

Increasing competition of good output which interpreted with GDP in developed and developing countries that are members of the G20, have some impact on the degradation of environmental quality. The Production of good output namely GDP cannot be separated from bad output's production which is CO2. The need for the Kyoto protocol as an environmental policy which has been ratified by the G20 that supposing to control emission levels which can be measured by the measurement of the environmental efficiency of the G20 countries. Apart from the environmental efficiency, efficiency is not the main criterion for making a country to be standard for another country. On the other hand, the performance quality of the environment must also be taken into account. The amount of the cost of environmental policy to maximize environmental efficiency of a country but the environmental performance of the country, state inefficiency in the cost of the policy then the country has not been used in a cost-efficient technology for improving the environmental quality. The approach which has used in this study is a quantitative approach, using Data Envelopment Analysis (DEA). To specify the input and output that is used in determining the environmental efficiency using Malmquist Index. The input and output is processed by looking at differences in productivity and incorporate technological change in its interpretation. It can be concluded that the value of the environmental efficiency of some countries are on the production frontier even if the Kyoto protocol is not implemented, but with the policy of the Kyoto protocol was able to further improve the efficiency of the environment. In some other countries for example Brazil rose from 70.09% to 83.49%, while the Germany states increased by 4.43% in their environmental policy. From some countries evident show that the policy of the Kyoto protocol succeeded in carrying out its role as controlling the growth of emissions in developed and developing countries, especially the G20 members.

Global climate change raises a number of important issues for political scientists and theorists. One issue concerns the ethics of implementing policies that seek to manage the threats associated with dangerous climate change in order to protect the interests of future generations. The focus of much of the debate about climate change and inter-generational equity is the United Nations Framework Convention on Climate Change (FCCC) and the Kyoto Protocol to this Convention. This article outlines the mechanisms adopted by the Kyoto Protocol and three rival 'climate architectures', evaluating each in terms of some basic principles of equity.

The purpose of this paper is to undertake a critical evaluation of the Kyoto Protocol. The evolution of the discussions that produced the final document is sketched through the analysis of official documents of the United Nations Framework Convention on Climate Change (UNFCCC), relevant papers and material from the press. We also discuss the factors that cast doubts on the continuation and feasibility of the Protocol and the prospects for the post-Kyoto period and a new compromise.