This compelling work exposes the hidden barriers that confront women at every juncture along the scientific career path. Its vivid personal accounts offer a sobering view of the effects these obstacles have on the personal and professional lives of women. The authors argue that women can succeed in the scientific workplace by successfully managing "social capital," those networks and relationships scientists rely on for professional support and new ideas. This is vital reading for all scientists and social scientists, and for women considering a scientific career.