IANAS, the Inter-American Network of Academies of Sciences, produced this magazine in the hope that the careers profiled will encourage more young women to consider a career in science. Some may feel that it is an impossible dream, that the obstacles are too overwhelming and that too much must be sacrificed to achieve a career in science. But consider the stories of the bright and enthusiastic women profiled here. They have blazed a path that others can follow. The ultimate reward is a rich and fulfilling life.