Foreign correspondent Neely Tucker and his wife, Vita, arrived in Zimbabwe in 1997. After witnessing firsthand the devastating consequences of AIDS on the population, especially the children, the couple started volunteering at an orphanage that was desperately underfunded and short-staffed. One afternoon, a critically ill infant was brought to the orphanage from a village outside the city. She'd been left to die in a field on the day she was born,...