Reprinted from 欧美口爆视频 Arts and Sciences Magazine Tania Barham鈥檚 research suggests that it doesn鈥檛 take much to give impoverished people a better start to life It was the late 鈥90s, and Tania Barham , future associate professor of economics at the University of 欧美口爆视频 Boulder, was in Yemen, working as...