Twins have always been fascinating, even before the miracle of modern science and fertility drugs made them almost ubiquitous. In this memoir that is also a reported essay, former 60 Minutes producer Pogrebin looks at her own experiences as an identical twin—her sister, Robin, is a New York Times reporter—and those of others; she also interviews what seems like almost every twin expert in the world. How is a twin’s experience of childhood and life different from that of mere singletons? This book about what it means to be a duplicate is smart and revealing and wise—and, well, singular.”  – Sara Nelson, The Daily Beast 9/7/09