 The second trend we would identify is that there is increasingly likely a need for political philosophy dealing with specific global phenomena. Much of what we have dealt with here has looked only at the macro-level phenomenon of global inequality. A full analysis of global justice will also look at specific forms of human institution and agency that are likely to be relevant from the standpoint of justice. We have already mentioned, if only in passing, the issues of immigration, fairness in trade, and feminism. We would conclude here by mentioning some other areas of inquiry that might become increasingly important. Buchanan (2009) and Pogge (2009) have both produced recent work on global incentives for pharmaceutical research. Ypi, Goodin, &amp; Barry (2009) have written on the issue of global debt relief. Gardiner (2004) and Caney (2008, 2009) have written on the relationship of global climate change and global inequality. Increasingly, we believe that these sorts of analyses are likely to proliferate, and philosophers come to terms not just with the fact of inequality, but with the plurality of different reasons for—and solutions to—that inequality.  Political philosophy has only recently turned its attention to questions of global justice; it is our hope that this attention will deepen in years to come, as we gain more understanding of the nature and causes of global underdevelopment and inequality.