Sciencehistory Podcasts

Many of the most important secrets held in international contests are technological or scientific in nature, and wars are often settled due to technological superiority of one side over the other. This leads spy agencies to employ all manner of trickery and tools to obtain those secrets. With us to explore the history of scientific espionage is Eli…

Sibling relationships can include everything from love and support–to tension, competition, and conflict. They might also play a fundamental role in the evolution of our species. In the final installment of our three-part series on family relationships, researchers Karen Kramer, Cat Hobaiter, and Rachna Reddy explore surprising new science about th…

A retrospective on the Franck-Hertz experiment, which resulted in James Franck and Gustav Hertz receiving the 1925 Nobel Prize in Physics. Image credit: By Infoczo - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=35281920By Frank A. von Hippel

Humans invest enormous amounts of time and energy into bringing up our babies. This unique investment is a fundamental part of what it means to be human. In this episode, the second in a three-part series on family relationships, researchers Lee Gettler, Stacy Rosenbaum, and Sonny Bechayda explore how our species' approach to fatherhood may have sh…

A retrospective on James Franck, recipient of the 1925 Nobel Prize in Physics.By Frank A. von Hippel

Humans invest enormous amounts of time and energy into bringing up our babies. This unique investment is a fundamental part of what it means to be human. In this episode, the first in a three-part series on family relationships, researchers Sarah Blaffer Hrdy, Stacy Rosenbaum, and Amy Scott explore how our species' approach to motherhood may hold t…

The ability to extract DNA from ancient fragments of biological material has revolutionized our understanding of recent evolutionary history, including human evolution and phylogeography. Analysis of ancient DNA in tandem with radiocarbon dating, along with traditional archeological techniques, has led to a flurry of discoveries. With us to discuss…

How did climate change impact ancient human behavior? This is one of the questions Justin Pargeter and his team are investigating at a site called Boomplaas Cave in South Africa. This site has a unique record of human presence over the past 80,000 years or so. Importantly, the site is helping researchers piece together the story of how humans adapt…

The world just experienced a devastating pandemic, yet in the context of historical pandemics, COVID-19 was a relatively minor event in the history of disease. What do we know about the history of pandemics, including before written records, and what can we learn from this history? With us to answer these and other questions about the origins of ep…

This special episode takes you inside the world of archaeology students at Boomplaas Cave, one of South Africa’s flagship human evolution research sites. Led by Dr. Justin Pargeter, the students chronicle their field school journey through personal audio diaries, offering a candid look at the joys, thrills, and challenges of archaeological fieldwor…

Before the advent of the germ theory of disease in the 1870s, quarantine provided one of the few effective means to prevent or alleviate epidemics. The Lazaretto quarantine station in Philadelphia illustrates the history of quarantine both before and after the discovery of pathogenic microbes. With us to explore the history of 18th and 19th century…

In this episode, we explore the fascinating tale of the Hobbit, an unexpected fossil find that shook the world's understanding of human evolution. Join researcher Matt Tocheri as he shares how this tiny hominin revolutionized the human story and transformed his life. Links: From the Field: Matt Tocheri Homo floresiensis Can rat bones solve an islan…

What are the commonalities between scaling the world's highest peaks and tackling the most challenging pollution problems? What was it like to enter the worlds of climbing and chemistry as a woman in the 1960s and 70s? With us to answer these questions is Arlene Blum. Arlene completed a bachelor's degree at Reed College in 1966 and a PhD in biophys…

Any intellectual endeavor runs the risk of bias. Today we explore ways in which political ideology interferes with scholarship, particularly in the social sciences, with a focus on social psychology. My guest is Lee Jussim, a distinguished professor of social psychology and the leader of the Social Perception Laboratory at Rutgers University. Lee i…

Dr. Kira Westaway is part of an international research team working to solve the mystery of Gigantopithecus, the largest ape that ever walked the earth. In this episode, we explore how this massive primate lived, why it disappeared, and what it can tell us about extinctions happening now. Learn more: Where Giants Roamed Origin Stories is a project …

The world's environmental problems demand solutions for the common good, which in turn necessitate environmental diplomacy. With us to untangle the messy history of environmental diplomacy is Mark Lytle. In addition to his long tenure as a professor at Bard College, Mark has taught at Yale, Vassar, and University College Dublin. Mark's books includ…

How do human bodies use energy? In this episode, Leakey Foundation grantee Dr. Herman Pontzer shares groundbreaking research that upends our understanding of metabolism, calories, and the history of our species. Origin Stories is hosted by Meredith Johnson, produced and sound designed by Ray Pang, and edited by Audrey Quinn. Support this show and t…

Certain fields of science attract broad interest because of what they tell us about humanity, and no field does this more directly than paleoanthropology. Today we explore the history of paleoanthropology with a focus on Louis and Mary Leakey, who made key discoveries at an inflection point of our understanding of human evolution. With us to discus…

2022 was another exciting year in human origins research! New fossil discoveries and ancient DNA research expanded our understanding of the past. We learned something surprising about the evolution of human speech, and new methodologies and showed promising potential to improve the future of medicine. In this episode, four Leakey Foundation scienti…

We've been hard at work on a new season of stories about how we became human. Origin Stories returns on January 31 with monthly episodes!By The Leakey Foundation

How could a conservation easement be anything other than a great thing? With us to answer this question are Jaimi Dowdell and Andrea Januta, both of whom are investigative reporters and data journalists with Reuters. Jaimi and Andrea were part of the Reuters team that won the 2021 Pulitzer Prize in Explanatory Reporting. Today we discuss their Reut…

For thousands of years, scholars have struggled with what it means to be human. One critical dimension of humanity is foresight, and with us to decipher the evolution of foresight is Thomas Suddendorf. Thomas is a professor at the University of Queensland, where he investigates mental capacities in young children and in animals to answer fundamenta…

Johan Rockström and colleagues first proposed the concept in 2009 of planetary boundary threats and a safe operating space for humanity. This conceptual framework clarifies environmental problems that are of planetary significance, such as biodiversity loss, climate change, and stratospheric ozone depletion. The most recently articulated planetary…

The Wall Street Crash of 1929 and the ensuing worldwide Great Depression left families in economic shock and despair. International trade collapsed to less than half of its previous levels and unemployment skyrocketed. Into this devastating mess stepped Franklin Delano Roosevelt, who began his long presidency in 1933. FDR spearheaded a series of pr…

The ways people think about matters both big and small, from climate change to daily tasks, impact the outcomes. Throughout the history of science and society, key insights arose through a thought process of simplification and subtraction, though the human tendency leans towards complication and addition. Today I discuss the power of subtraction wi…

No matter our claims to the contrary, we are all biased in our perceptions and beliefs. But bias is not random and its directions relate to our evolutionary history and culture, especially to how these interface with human sociality. With us to decipher bias is Jim Zimring. Jim is the author of What Science is and How it Really Works, published by …

The oceans have been used as the dumping grounds for all manner of toxic waste. Outrage over such dumping led to the Marine Protection, Research, and Sanctuaries Act of 1972 in the United States and the London Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter in 1975. Today I discuss the dumping of DDT and other…

Many landmarks of environmental history share a connection with a single molecule: DDT. During and after the Second World War, it was broadcast into the environment at a scale that far surpassed the applications of any prior chemical. The public met this mass spraying of DDT with enthusiasm, as the war proved it to be highly effective against the v…

In this episode, we explore five strange fossilized footprints found by Mary Leakey at the site of Laetoli in Tanzania. Decades after their original discovery, these footprints have revealed a new story about our ancient ancestors that expands our understanding of how hominins moved and interacted. ThanksThanks to Dr. Ellison McNutt and Dr. Charles…

At the start of the 20th century, physicists probed the structure of nature. Their discoveries changed our fundamental understanding of matter, of life, and of war. At the center of these discoveries stood the Danish physicist Niels Bohr. Bohr approached problems of atomic structure and quantum theory with a philosophical perspective and an ability…

The advent of agriculture over 10,000 years ago forever altered the trajectory of humanity. Communities grew larger until cities and nations dotted the landscape, labor became specialized, new diseases emerged, civilizations flourished and vanished, warfare increased in scale and lethality, and people colonized every corner of the globe. Agricultur…