Tropical Africa was one of the last regions of the world to experience formal European colonialism, a process that coincided with the advent of a range of new scientific specialties and research methods. Africa as a Living Laboratory is a far-reaching study of the thorny relationship between imperialism and the role of scientific expertise—environmental, medical, racial, and anthropological—in the colonization of British Africa.

A key source for Helen Tilley’s analysis is the African Research Survey, a project undertaken in the 1930s to explore how modern science was being applied to African problems. This project both embraced and recommended an interdisciplinary approach to research on Africa that, Tilley argues, underscored the heterogeneity of African environments and the interrelations among the problems being studied. While the aim of British colonialists was unquestionably to transform and modernize Africa, their efforts, Tilley contends, were often unexpectedly subverted by scientific concerns with the local and vernacular. Meticulously researched and gracefully argued, Africa as a Living Laboratory transforms our understanding of imperial history, colonial development, and the role science played in both.

A sweeping global history that looks beyond European urban centers to show how slavery, colonialism, and war propelled the development of modern medicine.

Most stories of medical progress come with ready-made heroes. John Snow traced the origins of London’s 1854 cholera outbreak to a water pump, leading to the birth of epidemiology. Florence Nightingale’s contributions to the care of soldiers in the Crimean War revolutionized medical hygiene, transforming hospitals from crucibles of infection to sanctuaries of recuperation. Yet histories of individual innovators ignore many key sources of medical knowledge, especially when it comes to the science of infectious disease.

Reexamining the foundations of modern medicine, Jim Downs shows that the study of infectious disease depended crucially on the unrecognized contributions of nonconsenting subjects—conscripted soldiers, enslaved people, and subjects of empire. Plantations, slave ships, and battlefields were the laboratories in which physicians came to understand the spread of disease. Military doctors learned about the importance of air quality by monitoring Africans confined to the bottom of slave ships. Statisticians charted cholera outbreaks by surveilling Muslims in British-dominated territories returning from their annual pilgrimage. The field hospitals of the Crimean War and the US Civil War were carefully observed experiments in disease transmission.

The scientific knowledge derived from discarding and exploiting human life is now the basis of our ability to protect humanity from epidemics. Boldly argued and eye-opening, Maladies of Empire gives a full account of the true price of medical progress.

Winner of the Runciman Award
Winner of the Charles J. Goodwin Award

“Tells the story of how the Seleucid Empire revolutionized chronology by picking a Year One and counting from there, rather than starting a new count, as other states did, each time a new monarch was crowned…Fascinating.”
—Harper’s

In the aftermath of Alexander the Great’s conquests, his successors, the Seleucid kings, ruled a vast territory stretching from Central Asia and Anatolia to the Persian Gulf. In 305 BCE, in a radical move to impose unity and regulate behavior, Seleucus I introduced a linear conception of time. Time would no longer restart with each new monarch. Instead, progressively numbered years—continuous and irreversible—became the de facto measure of historical duration. This new temporality, propagated throughout the empire and identical to the system we use today, changed how people did business, recorded events, and oriented themselves to the larger world.

Some rebellious subjects, eager to resurrect their pre-Hellenic past, rejected this new approach and created apocalyptic time frames, predicting the total end of history. In this magisterial work, Paul Kosmin shows how the Seleucid Empire’s invention of a new kind of time—and the rebellions against this worldview—had far reaching political and religious consequences, transforming the way we organize our thoughts about the past, present, and future.

“Without Paul Kosmin’s meticulous investigation of what Seleucus achieved in creating his calendar without end we would never have been able to comprehend the traces of it that appear in late antiquity…A magisterial contribution to this hitherto obscure but clearly important restructuring of time in the ancient Mediterranean world.”
—G. W. Bowersock, New York Review of Books

“With erudition, theoretical sophistication, and meticulous discussion of the sources, Paul Kosmin sheds new light on the meaning of time, memory, and identity in a multicultural setting.”
—Angelos Chaniotis, author of Age of Conquests