“…However, since CO 2 stock control is out of policy makers' influence, they have been proposed limits on the rate of emissions flow, such as Kyoto protocol. But, dealing with flows does not guarantee the solution to the problem, as the limited success of existing attempts of reaching global commitments shows, so humanity faces a public good dilemma and requires further cooperation (Vasconcelos et al, 2013, Beccherle and Tirole, 2011, Finus and Pintassilgo, 2013. Given the causality of economic growth on CO 2 emissions 3 , international income inequality plays a critical role in this scene: rich countries are responsible of the bulk of historical cumulative emissions, whereas developing countries feel punished for others' sins and reclaim their right to achieve greater income.…”