An optimal linear world income tax that maximizes a border-neutral social welfare function provides a drastic reduction … in world consumption inequality, dropping the Gini coefficient from 0.69 to 0.25. In contrast an optimal decentralized (i ….e., within countries) redistribution has miniscule effect on world income inequality. Thus, the traditional public finance …

economies, are false or need serious amendment in a world with international trade in goods. Since the three results we … a re-examination may be in order. Specifically, we demonstrate that in an open trading world, but not in a closed …

world real GDP per capita by 7.22 percent by 2100. On the other hand, abiding by the Paris Agreement, thereby limiting the …