The Harvard Brief

Our solar system is a dynamic arena where asteroids careen off course and solar winds hurl charged particles across billions of miles of space. Yet we seldom consider how these events, so immense in scale, influence our fragile blue planet: Earth.

In Ripples on the Cosmic Ocean: An Environmental History of Our Place in the Solar System (Harvard UP, 2025), Dagomar Degroot traces the surprising threads linking human endeavor to the rest of the solar system. He reveals how variability in planetary environments has shaped geopolitics, spurred scientific and cultural innovation, and encouraged new ideas about the emergence and fate of life. Martian dust storms altered the trajectory of the Cold War and inspired fantastical stories about alien civilizations. Comet impacts on Jupiter led to the first planetary defense strategy. And volcanic eruptions spewed sulfuric acid into Venus's atmosphere, exposing the existential risks of climate change at home.

As we stand on the brink of a new era of space settlement, cosmic environments are becoming increasingly vulnerable to human activity. They may also hold the key to slowing the destruction of environments on Earth. Ripples on the Cosmic Ocean urges us to develop an interplanetary environmentalism across a vast mosaic of entangled worlds and to consider the profound connections that bind us to the cosmos and each other.

In The Tame and the Wild: People and Animals after 1492 (Harvard University Press, 2024), Dr. Marcy Norton offers a dramatic new interpretation of the encounter between Europe and the Americas that reveals the crucial role of animals in the shaping of the modern world.
When the men and women of the island of Guanahani first made contact with Christopher Columbus and his crew on October 12, 1492, the cultural differences between the two groups were vaster than the oceans that had separated them. There is perhaps no better demonstration than the divide in their respective ways of relating to animals. In this book, Dr. Norton tells a new history of the colonisation of the Americas, one that places wildlife and livestock at the centre of the story. She reveals that the encounters between European and Native American beliefs about animal life transformed societies on both sides of the Atlantic.
Europeans’ strategies and motives for conquest were inseparable from the horses that carried them in military campaigns and the dogs they deployed to terrorise Native peoples. Even more crucial were the sheep, cattle, pigs, and chickens whose flesh became food and whose skins became valuable commodities. Yet as central as the domestication of animals was to European plans in the Americas, Native peoples’ own practices around animals proved just as crucial in shaping the world after 1492. Cultures throughout the Caribbean, Amazonia, and Mexico were deeply invested in familiarisation: the practice of capturing wild animals—not only parrots and monkeys but even tapir, deer, and manatee—and turning some of them into “companion species.” These taming practices not only influenced the way Indigenous people responded to human and nonhuman intruders but also transformed European culture itself, paving the way for both zoological science and the modern pet.

This interview was conducted by Dr. Miranda Melcher whose forthcoming book focuses on post-conflict military integration, understanding treaty negotiation and implementation in civil war contexts, with qualitative analysis of the Angolan and Mozambican civil wars.

As reports of mass killings in Bosnia spread in the middle of 1995, Germans faced a dilemma. Should the Federal Republic deploy its military to the Balkans to prevent a genocide, or would departing from postwar Germany’s pacifist tradition open the door to renewed militarism? In short, when Germans said “never again,” did they mean “never again Auschwitz” or “never again war”?
Looking beyond solemn statements and well-meant monuments, Andrew I. Port examines how the Nazi past shaped German responses to the genocides in Cambodia, Bosnia, and Rwanda—and further, how these foreign atrocities recast Germans’ understanding of their own horrific history. In the late 1970s, the reign of the Khmer Rouge received relatively little attention from a firmly antiwar public that was just “discovering” the Holocaust. By the 1990s, the genocide of the Jews was squarely at the center of German identity, a tectonic shift that inspired greater involvement in Bosnia and, to a lesser extent, Rwanda. Germany’s increased willingness to use force in defense of others reflected the enthusiastic embrace of human rights by public officials and ordinary citizens. At the same time, conservatives welcomed the opportunity for a more active international role involving military might—to the chagrin of pacifists and progressives at home.
Making the lessons, limits, and liabilities of politics driven by memories of a troubled history harrowingly clear, Never Again: Germans and Genocide After the Holocaust (Harvard UP, 2023) is a story with deep resonance for any country confronting a dark past.
Kelly McFall is Professor of History and Director of the Honors Program at Newman University.

The period from 1550 to 1700 was critical in the development of slavery across the English Atlantic world. During this time, English discourse about slavery revolved around one central question: How could free persons be made into slaves? John Samuel Harpham shows that English authors found answers to this question in a tradition of ideas that stretched back to the ancient world, where they were most powerfully expressed in Roman law. These ideas, in turn, became the basis for the earliest defenses of American slavery. The Roman tradition had located the main source of slavery in war: enslavement was the common fate of captives who otherwise faced execution. In early modern England, this account was incorporated into studies of the common law and influential natural rights theories by the likes of Hugo Grotius and John Locke. When Europeans started to publish firsthand accounts of Africa in the sixteenth century, these reports were thus received into a culture saturated with Roman ideas. Over time, English observers started to assert that the common customs of enslavement among the nations of Africa fit within the Roman model. Englishmen had initially expressed reluctance to take part in the Atlantic slave trade. But once assured that the slave trade could be traced back to customs they understood to be legitimate, they proved keen to profit from it.

An eloquent account of the moral logic that propelled the development of an immoral institution, John Samuel Harpham's The Intellectual Origins of American Slavery (Harvard University Press, 2025) reveals the power of an overlooked tradition of ideas in the history of human bondage.

Immanuel Kant is undoubtedly the most important philosopher of the modern era. His Critique of Pure Reason, “categorical imperative,” and conception of perpetual peace in the global order decisively influenced both intellectual history and twentieth-century politics, shaping everything from the German Constitution to the United Nations Charter.

Renowned philosopher Marcus Willaschek explains why, three centuries after Kant’s birth, his reflections on democracy, beauty, nature, morality, and the limits of human knowledge remain so profoundly relevant. Weaving biographical and historical context together with exposition of key ideas, Willaschek emphasizes three central features of Kant’s theory and method. First, Kant combines seemingly incompatible positions to show how their insights can be reconciled. Second, he demonstrates that it is not only human thinking that must adjust to the realities of the world; the world must also be fitted to the structures of our thinking. Finally, he overcomes the traditional opposition between thought and action by putting theory at the service of practice.

In Kant: A Revolution in Thinking (Harvard UP, 2025), even readers having no prior acquaintance with Kant’s ideas or with philosophy generally will find an adroit introduction to the Prussian polymath’s oeuvre, beginning with his political arguments, expanding to his moral theory, and finally moving to his more abstract considerations of natural science, epistemology, and metaphysics. Along the way, Kant himself emerges from beneath his famed works, revealing a magnetic personality, a clever ironist, and a man deeply engaged with his contemporary world.

Marcus Willaschek is Professor of Philosophy at Goethe University, Frankfurt, and a member of the Berlin-Brandenburg Academy of Science, where he is responsible for the German standard edition of Kant’s works. The author of four books, he is also coeditor of the three-volume Kant-Lexikon.

Morteza Hajizadeh is a Ph.D. graduate in English from the University of Auckland in New Zealand. His research interests are Cultural Studies; Critical Theory; Environmental History; Medieval (Intellectual) History; Gothic Studies; 18th and 19th Century British Literature.

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