This sci-fi classic from famed author Alan E. Nourse skillfully blends interesting speculation about future technologies and scientific practices and resonant social themes that are still relevant today, such as the lasting effects of prejudice and segregation. The novel tells the story of Earth's quest to join the Galactic Federation, which requires that member planets have a skill or technology that will be a valuable contribution to the group. This effort is mirrored on another level by the struggle facing med-school student Dal Timgar, whose efforts to become a physician are stymied by bigotry.