In Contraception and Abortion from the Ancient World to the Renaissance, John M. Riddle showed, through extraordinary scholarly sleuthing, that women from ancient Egyptian times to the fifteenth century had relied on an extensive pharmacopoeia of herbal abortifacients and contraceptives to regulate fertility. In Eve’s Herbs, Riddle explores a new question: If women once had access to effective means of birth control, why was this knowledge lost to them in modern times?

Beginning with the testimony of a young woman brought before the Inquisition in France in 1320, Riddle asks what women knew about regulating fertility with herbs and shows how the new intellectual, religious, and legal climate of the early modern period tended to cast suspicion on women who employed “secret knowledge” to terminate or prevent pregnancy. Knowledge of the menstrual-regulating qualities of rue, pennyroyal, and other herbs was widespread through succeeding centuries among herbalists, apothecaries, doctors, and laywomen themselves, even as theologians and legal scholars began advancing the idea that the fetus was fully human from the moment of conception.

Drawing on previously unavailable material, Riddle reaches a startling conclusion: while it did not persist in a form that was available to most women, ancient knowledge about herbs was not lost in modern times but survived in coded form. Persecuted as “witchcraft” in centuries past and prosecuted as a crime in our own time, the control of fertility by “Eve’s herbs” has been practiced by Western women since ancient times.

Plants seldom figure in the grand narratives of war, peace, or even everyday life yet they are often at the center of high intrigue. In the eighteenth century, epic scientific voyages were sponsored by European imperial powers to explore the natural riches of the New World, and uncover the botanical secrets of its people. Bioprospectors brought back medicines, luxuries, and staples for their king and country. Risking their lives to discover exotic plants, these daredevil explorers joined with their sponsors to create a global culture of botany.

But some secrets were unearthed only to be lost again. In this moving account of the abuses of indigenous Caribbean people and African slaves, Schiebinger describes how slave women brewed the "peacock flower" into an abortifacient, to ensure that they would bear no children into oppression. Yet, impeded by trade winds of prevailing opinion, knowledge of West Indian abortifacients never flowed into Europe. A rich history of discovery and loss, Plants and Empire explores the movement, triumph, and extinction of knowledge in the course of encounters between Europeans and the Caribbean populations.