With Pulitzer Prize winners Nicholas D. Kristof and Sheryl WuDunn as our guides, we undertake a journey through Africa and Asia to meet an extraordinary array of women struggling under profoundly dire circumstances: a Cambodian teenager sold into sex slavery; an Ethiopian woman left for dead after a difficult birth; an Afghan wife beaten ruthlessly by her husband and mother-in-law. But we meet, as well, those who have triumphed — a formerly illiterate fistula patient who became a surgeon in Addis Ababa; an Indian woman who saved herself and her children from prostitution — and those who make it their work to provide hope and help to other women: the victim of gang rape who galvanized the international community and created schools in rural Pakistan; the former Peace Corps volunteer who founded an organization that educates and campaigns for women's rights in Senegal. Through their stories, Kristof and WuDunn help us see that the key to progress lies in unleashing women's potential. They make clear how so many people have helped to do just that, and how we can each do our part. Throughout much of the world, the greatest unexploited economic resource is the female half of the population. Countries such as China have prospered precisely because they emancipated women and brought them into the formal economy. Unleashing that process globally is not only the right thing to do; it's also the best strategy for fighting poverty.