Because in a world of so much horror we still need hope, the voice of Nicholas Kristof is always welcome. For years he has been stepping out of the role of cold-eyed, dispassionate journalist and using his columns in the New York Times to educate us on what we can do, in tiny ways, in our tiny little lives, to lessen that horror. His book, Half the Sky, co-written with his wife Sheryl WuDunn is by now famous. Yet he still finds new stories of fire in the belly to tell. Books, schools, medical clinics? Yes. But also banana fibers and menstrual pads. Read about it all in his latest column.