and journalist ann friedman gives her brief but spectacular take on finding her voice.st, a key part of president trump's campaign was pledging to restore prosperity and ease the anxiety for those left behind by globalization. income inequality was a problem during president obama's tenure, too. the trend began well before either took office. and the widening gap here is connected to growth in other parts of the world. our economics correspondent, paul solman, has been exploring those trends, and it's the focus of his weekly segment, "making sense." >> what is also good news is that people around this point, like one third of the global population, have done really quite well. >> reporter: at the city university of new york graduate center, economist branko milanovic and the hottest curve in economics right now, charting the climb of a billion out of poverty, and explaining the rise of china, the rise of populism in europe, the rise of donald trump. and thanks to its pachydermal profile, and twitter, it has an almost unforgettable name: the elephant chart. >> i remember