In their earlier book, Half the Sky, husband-and-wife team Nicholas D. Kristof and Sheryl WuDunn brought to light struggles faced by women and girls around the globe, and showcased individuals and institutions working to address oppression and expand opportunity. A Path Appears is even more ambitious in scale: a sweeping tapestry of people who are making the world a better place and a guide to the ways that we can do the same -- whether with a donation...