The eight case studies in this book -- each a synthesis of available knowledge about the origins of agriculture in a specific region of the globe -- enable scholars in diverse disciplines to examine humanity's transition to agricultural societies. Contributors include: Gary W. Crawford, Robin W. Dennell, and Jack R. Harlan.

People have always been attracted to foods rich in calories, fat, and protein; yet the biblical admonition that meat be eaten “with bitter herbs” suggests that unpalatable plants play an important role in our diet. So-called primitive peoples show a surprisingly sophisticated understanding of how their bodies interact with plant chemicals, which may allow us to rediscover the origins of diet by retracing the paths of biology and culture.
 
The domestication of the potato serves as the focus of Timothy Johns’s interdisciplinary study, which forges a bold synthesis of ethnobotany and chemical ecology. The Aymara of highland Bolivia have long used varieties of potato containing potentially toxic levels of glycoalkaloids, and Johns proposes that such plants can be eaten without harm owing to human genetic modification and cultural manipulation. Drawing on additional fieldwork in Africa, he considers the evolution of the human use of plants, the ways in which humans obtain foods from among the myriad poisonous and unpalatable plants in the environment, and the consequences of this history for understanding the basis of the human diet. A natural corollary to his investigation is the origin of medicine, since the properties of plants that make them unpalatable and toxic are the same properties that make them useful pharmacologically.
 
As our species has adapted to the use of plants, plants have become an essential part of our internal ecology. Recovering the ancient wisdom regarding our interaction with the environment preserves a fundamental part of our human heritage.

Originally published in hardcover as With Bitter Herbs They Shall Eat It: Chemical Ecology and the Origins of Human Diet and Medicine

“If you want to know who you are and where you come from, follow the maíz.” That was the advice given to author Roberto Cintli Rodriguez when he was investigating the origins and migrations of Mexican peoples in the Four Corners region of the United States.

Follow it he did, and his book Our Sacred Maíz Is Our Mother changes the way we look at Mexican Americans. Not so much peoples created as a result of war or invasion, they are people of the corn, connected through a seven-thousand-year old maíz culture to other Indigenous inhabitants of the continent. Using corn as the framework for discussing broader issues of knowledge production and history of belonging, the author looks at how corn was included in codices and Mayan texts, how it was discussed by elders, and how it is represented in theater and stories as a way of illustrating that Mexicans and Mexican Americans share a common culture.

Rodriguez brings together scholarly and traditional (elder) knowledge about the long history of maíz/corn cultivation and culture, its roots in Mesoamerica, and its living relationship to Indigenous peoples throughout the continent, including Mexicans and Central Americans now living in the United States. The author argues that, given the restrictive immigration policies and popular resentment toward migrants, a continued connection to maíz culture challenges the social exclusion and discrimination that frames migrants as outsiders and gives them a sense of belonging not encapsulated in the idea of citizenship. The “hidden transcripts” of corn in everyday culture—art, song, stories, dance, and cuisine (maíz-based foods like the tortilla)—have nurtured, even across centuries of colonialism, the living maíz culture of ancient knowledge.