Princeton UP Ideas Podcast

Doubts about the international dominance of the dollar are only growing amid worries about tariffs, political dysfunction, and fraying international alliances. Will the dollar continue to reign supreme? In Money Beyond Borders, the leading authority on international currencies, Barry Eichengreen, puts the dollar's prospects in deep historical perspective by chronicling the entire history of cross-border currencies, from the invention of coins in the seventh century BCE to the cryptocurrencies of today and the central bank digital currencies of tomorrow.

Money Beyond Borders: Global Currencies from Croesus to Crypto (Princeton University Press, 2026) recounts how Greek and Roman coins became the first true international currencies. It tells how the Florentine gold florin became the "greenback of the Renaissance," and how it was succeeded by Spanish silver and a Dutch fiat currency. The book explains why the British pound dominated the international economy in the nineteenth century, why the dollar rose to the top during World War II, and why the dollar has survived predictions of the imminent loss of its preeminence since the 1970s.

The long history of international currencies shows that the same factors that encourage their widespread use eventually lead to their abandonment. Money Beyond Borders makes a powerful case that the dollar is now on the downside of this cycle, and it considers who the winners and losers will be when there is flight away from the greenback. Revealing important patterns in the life cycles of international currencies over the past 2,500 years, the book offers valuable lessons and insights about how currencies rise--and why they fall.

Barry Eichengreen is the George C. and Helen N. Pardee Chair and Distinguished Professor of Economics and Political Science at the University of California, Berkeley.

Caleb Zakarin is the CEO and Publisher of the New Books Network.

In Late Antiquity (ca. 200–600 CE), the world was alive with unseen forces—divine agents who influenced every aspect of daily life. For most ordinary people, religion was not found in temples, synagogues, and churches, but in lived experience as they interacted with the supernatural in a world of uncertainty and danger. In An Enchanted World, Michael Satlow uncovers a shared spiritual landscape that stretched beyond the confines of Judaism, Christianity, and the pantheon of Greek and Roman deities. From healing rituals to protective amulets, spiritual practices were a matter of necessity, transcending religious labels. To get by in the world required being on good terms with the right supernatural beings and being able to ward off the bad ones.Rejecting traditional narratives that focus on institutional religion and theological divisions, Satlow presents a compelling case for viewing the period through the lens of “lived religion.” This was not a religion of abstractions formulated by rabbis and priests, but an enchanted world populated by divine beings who had as much—if not more—agency as any person. Drawing on archaeological evidence, historical documents, and a rich trove of magical texts, Satlow vividly reconstructs how ordinary people lived in a world that crackled with the energy of the supernatural. His account reimagines the spiritual history of Late Antiquity, centering shared human fears and aspirations and challenging preconceived notions about religious boundaries. With An Enchanted World, Satlow offers a fresh perspective on a transformative period—one that has much to teach us even today about the role that spirituality can play in the secular world.

New Books in Late Anqituiy is Presented by Ancient Jew Review

Michael Satlow is professor of Judaic Studies and Religious Studies at Brown University

Michael Motia teaches Classics and Religious Studies at UMass Boston

The Origins of the New (Princeton University Press, 2026) presents a revolutionary approach to evolutionary success in all realms of life. In this groundbreaking book, Douglas Erwin takes readers on a dazzling excursion across science and history to explore how evolution generates new and enduring features in biology, culture, and technology.Erwin begins by tracing how thinkers from Darwin’s time to the present day have sought to discover the driving mechanisms of evolutionary novelty. He then lays out compelling empirical evidence for separating novelty from innovation, showing that novelty involves the emergence of unique characteristics, while innovation concerns the success of those characteristics over time. Erwin develops a unifying conceptual framework for these powerful dynamics, demonstrating how they have shaped everything from the evolution of avian feathers and flight to the creation of human language and the breathtaking advances in digital computing we’re witnessing today.A landmark work that redefines our understanding of the changes happening all around us, The Origins of the New reveals how the forces of novelty and innovation are the same across nature and culture, continually producing new forms and refashioning the world as we know it.

Our guest is doctor Doug Erwin, who is an independent researcher at the Santa Fe Institute, after retiring as Senior Scientist and Curator of Paleobiology at the National Museum of Natural History of the Smithsonian Institution.

Our host is Eleonora Mattiacci, an Associate Professor of Political Science at Amherst College. She is the author of "Volatile States in International Politics" (Oxford University Press, 2023).

As a child in the foothills of the Himalayas, Priyanka Kumar was entranced by forest-like orchards of diverse and luscious fruit--especially apples. These biodiverse orchards seemed worlds away from the cardboard apples that lined supermarket shelves in the United States. Yet on a small patch of woods near her home in Santa Fe, Kumar discovered a wild apple tree--and the seeds of an odyssey were planted. Could the taste of a feral apple offer a doorway to the wild? In The Light Between Apple Trees: Rediscovering the Wild Through a Beloved American Fruit (Island Press, 2026), Kumar takes us on a dazzling and transformative journey to rediscover apples, unearthing a rich and complex history while illuminating how we can reimagine our relationship with nature.

Apples are popular, but in our everyday lives we rarely encounter more than a handful of varieties: of the sixteen thousand apple varieties once celebrated in America, scarcely a fifth remain accessible. Kumar reveals the richness of a hidden world, bringing readers to the vibrant forests and orchards where historic trees still survive. These mature and wild orchards offer more than just fruit: they are havens for creatures from hummingbirds to bears and a living connection to generations past. She brilliantly weaves together science and childhood memories with the apple's storied history, from its roots in Kazakhstan to Spanish orchards in the Southwest and Thomas Jefferson's beloved Monticello fruitery.

The Light Between Apple Trees is a lyric odyssey that will forever change how you look at an "apple a day." Kumar shows how--if we follow untamed paths--the tang and texture of an apple can lead us back to the wild.

Priyanka Kumar is a nationally-acclaimed naturalist and the author. Kumar has taught at the University of California Santa Cruz and the University of Southern California, and serves on the Advisory Council of the Leopold Writing Program.

Caleb Zakarin is the CEO and Publisher of the New Books Network.

It’s one of the biggest questions in economic history: How did a richer, more advanced China fall behind Europe? Why was Europe the home of the Industrial Revolution, and not China? And what does that journey tell us about politics and culture?

In Two Paths to Prosperity: Culture and Institutions in Europe and China, 1000–2000 (Princeton UP, 2025), Guido Tabellini, alongside his co-authors, argues that the answer comes from how European and Chinese organized cooperation—through corporations in Europe and through clans in China—and how that shaped each one’s society.

Guido Tabellini is the Intesa Sanpaolo Chair in Political Economics and Vice President at Bocconi University.