Episodes

  • Craig Hogan, "The Unlikely Primeval Sky" (American Scientist, November-December)

    Craig Hogan, "The Unlikely Primeval Sky" (American Scientist, November-December)
    Nov 13 2025
    Of all the patterns that could possibly be preserved in the post–Big Bang radiation, the one we see is surprisingly smooth on large angular scales. Sitting by a campfire on a dark night, looking up at the Milky Way, a curious child asks, “What does the sky tell us? Where does it all come from? Does space go on forever?” A caring adult might share a little awe and humility about humanity’s place in the grand scheme or perhaps relate a traditional creation story. A scientist like me, who came of age soon after the discovery that the sky is not actually dark but awash in primeval radiation, might instead relate the still-unfinished scientific story of the boundaries and origins of time and space. That tale is displayed in nature’s own record of the structure of the early universe, a mosaic of temperature and density fluctuations preserved in the primordial light that astronomers call the cosmic microwave background (CMB). Learn more about your ad choices. Visit megaphone.fm/adchoices
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    30 mins
  • Facing Infinity: Black Holes and Our Place on Earth

    Facing Infinity: Black Holes and Our Place on Earth
    Nov 13 2025
    Humanity’s relationship with black holes began in 1783 in a small English village, when clergyman John Michell posed a startling question: What if there are objects in space that are so large and heavy that not even light can escape them? Almost 250 years later, in April 2019, scientists presented the first picture of a black hole. Profoundly inspired by that image, physicist Jonas Enander has traveled the world to investigate how our understanding of these elusive celestial objects has evolved since the days of Michell. With the particular goal of discovering our human connection to black holes, Enander visits telescopes and observatories, delves deeply into archives, and interviews over 20 world-leading experts, including several Nobel laureates. In Facing Infinity: Black Holes and Our Place on Earth (The Experiment, 2025), Dr. Enander takes us on a spellbinding journey into the universe’s greatest mystery, deciphers the most mind-bending science, and answers questions surrounding how black holes work, where they come from, and what role they play in the universe. Along the way, he discovers how our desire to understand black holes inadvertently paved the way for the invention of Wi-Fi and the calibration of our global navigation satellites, how astronomical discovery became entangled with colonial conflicts, and how our looking outward gave us critical evidence of the impact of climate change. Facing Infinity helps us appreciate and understand as never before these mysterious celestial objects and our surprising connections to them. Our guest is: Dr. Jonas Enander, who is a science communicator with a background in cosmology and astrophysics. His previous research focused on dark matter and Einstein’s theory of general relativity. He has worked as a physics teacher at the KTH Royal Institute of Technology in Stockholm, and participated in the construction of the IceCube Neutrino Observatory at the South Pole. He hosts the podcasts Spacetime Fika and Rumtiden. Our host is: Dr. Christina Gessler, who is a freelance editor. She is the producer of the Academic Life podcast, and writes the show’s newsletter at ChristinaGessler.Substack.Com. Playlist for listeners: The Space-Suit Technician The Climate Change Scientist The Well-Gardened Mind Doctors by Nature The Surprising World of Wasps The Killer Whale Journals The Shark Scientist A Day in the Life of Bugs Welcome to Academic Life, the podcast for your academic journey—and beyond! You can support the show by downloading and sharing episodes. Join us again to learn from more experts inside and outside the academy, and around the world. Missed any of the 275+ Academic Life episodes? Find them here. And thank you for listening! Learn more about your ad choices. Visit megaphone.fm/adchoices
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    56 mins
  • Marcus Chown, "A Crack in Everything: How Black Holes Came in from the Cold and Took Cosmic Centre Stage" (Apollo, 2025)

    Marcus Chown, "A Crack in Everything: How Black Holes Came in from the Cold and Took Cosmic Centre Stage" (Apollo, 2025)
    Nov 7 2025
    What is space? What is time? Where did the universe come from? The answers to mankind's most enduring questions may lie in science's greatest enigma: black holes.A black hole is a region of space where gravity is so strong that nothing, not even light, can escape. This can occur when a star approaches the end of its life. Unable to generate enough heat to maintain its outer layers, it shrinks catastrophically down to an infinitely dense point.When this phenomenon was first proposed in 1916, it defied scientific understanding so much that Albert Einstein dismissed it as too ridiculous to be true. But scientists have since proven otherwise. In 1971, Paul Murdin and Louise Webster discovered the first black hole: Cygnus X-1. Later, in the 1990s, astronomers using NASA's Hubble Space Telescope found that not only do black holes exist, supermassive black holes lie at the heart of almost every galaxy, including our own. It would take another three decades to confirm this phenomenon. On 10 April 2019, a team of astronomers made history by producing the first image of a black hole.A Crack in Everything: How Black Holes Came in from the Cold and Took Cosmic Centre Stage (Apollo, 2025)is the story of how black holes came in from the cold and took cosmic centre stage. As a journalist, Marcus Chown interviews many of the scientists who made the key discoveries, and, as a former physicist, he translates the most esoteric of science into everyday language. The result is a uniquely engaging page-turner that tells one of the great untold stories in modern science. Learn more about your ad choices. Visit megaphone.fm/adchoices
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    1 hr and 18 mins
  • James Trefil and Shobita Satyapal, "Supermassive: Black Holes at the Beginning and End of the Universe" (Smithsonian Books, 2025)

    James Trefil and Shobita Satyapal, "Supermassive: Black Holes at the Beginning and End of the Universe" (Smithsonian Books, 2025)
    Nov 7 2025
    Black holes, demystified: follow along the quest to understand the history and influence of one of space science's most fascinating and confounding phenomenaLed by physicist James Trefil and astrophysicist Shobita Satyapal, Supermassive: Black Holes at the Beginning and End of the Universe (Smithsonian Books, 2025) traverses the incredible history of black holes and introduces contemporary developments and theories on still unanswered questions about the enigmatic objects. From the early work of Albert Einstein and Karl Schwarzschild to an insider look at black hole-galaxy connection research led by co-author Satyapa, the comprehensive book surveys an exciting and evolving branch of space science, with topics that include: Visibility of black holes Quasars, the brightest objects in the universe The black hole at the center of the Milky Way Popular theories on the origin of black holes Cosmic X rays Death of supermassives Black hole collisions Black holes in science fiction Invisible to the naked eye and telescopes, black holes have mystified and entranced astronomers, scientists, and humanity for more than a century. The first image of a supermassive black hole was only unveiled in 2019, and new black holes are continually discovered. Supermassive illuminates what we know about black holes so far and what we have yet to uncover. Learn more about your ad choices. Visit megaphone.fm/adchoices
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    1 hr and 2 mins
  • Liam Graham, "Physics Fixes All the Facts" (Springer Nature, 2025)

    Liam Graham, "Physics Fixes All the Facts" (Springer Nature, 2025)
    Nov 5 2025
    Complex systems seem to magically emerge from the interactions of their parts. A whirlpool emerges from water molecules. A living cell from organic molecules. You emerge from the cells of your body. Not since chaos has a concept from physics spread like wildfire to other disciplines. Emergence can be found from chemistry to economics; from psychology to ecology. At its heart is the alluring idea that there's more to the world than physics, that there is a holistic component to nature, an edge of mystery. "Physics Fixes All the Facts" starts by taking you on a tour through a fascinating world of complexity, exploring phenomena from the inside of an atomic nucleus to bacterial behaviour to the ability of your thoughts to affect the world. These examples are used along with a thorough exploration of the philosophical literature to untangle the notoriously poorly defined concept of emergence. This reveals something surprising: the term emergence is redundant. In its weak form it is so weak that it applies to everything. In its strong form it is so restrictive that it is like the belief that there are pixies in your garden, impossible to exclude but not worth spending your time on. Emergence either applies to all systems or to none. Rather than telling us something about the nature of the world, it is an illusion, an artefact of our cognitive limitations. The past decade has seen a dozen or so monographs and collections about emergence, almost all resolutely supportive of the concept. This book aims to redress the balance. But it is more than just a campaign against the idea of emergence. Graham presents a framework called Austere Physicalism and argues that it is the only coherent way to view the world. He uses this framework to reinterpret so-called emergent phenomena and investigates its wider implications for science. In this radically materialist view, we are nothing but physical systems among others. "Physics Fixes All the Facts" ends by exploring what this means for our sense of free will and consciousness. The book will appeal to academics in fields which use the concepts of complexity or emergence. Scientists and philosophers alike will find unexpected and exciting ideas in these pages. But the target audience is much broader including students who want to add context to their studies and the intellectually curious with some scientific background. Learn more about your ad choices. Visit megaphone.fm/adchoices
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    47 mins
  • Vlatko Vedral, "Portals to a New Reality: Five Pathways to the Future of Physics" (Basic Books, 2025)

    Vlatko Vedral, "Portals to a New Reality: Five Pathways to the Future of Physics" (Basic Books, 2025)
    Oct 31 2025
    For the last century, physics has been treading along the paths set by the same two theories--quantum theory and general relativity--and, let's face it, it's getting pretty boring. Most scientists are simply chasing decimal points in laboratories, unable to explore the theories at large scales, where serious discrepancies could emerge. The situation is a lot like the one physics was in in 1890, right before Planck, Einstein, and Bohr blew the roof off Newtonian physics. As Vlatko Vedral argues in Portals to a New Reality: Five Pathways to the Future of Physics (Basic Books, 2025), that means we are on the brink of a revolution. Vedral shows how quantum information theory has opened radically new avenues for experiments that could upend physics. They can sound very strange--one essentially involves entangling a human with Schrödinger's cat--but they lay bare elements of our theories that are particularly problematic, such as the widespread belief that nothing truly exists unless it is observed. At present these experiments are thought experiments, albeit fascinating ones. But nothing, save inertia and a lack of ambition, stands in our way. Now is the time to rewrite the understanding of the universe. Learn more about your ad choices. Visit megaphone.fm/adchoices
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    1 hr and 15 mins
  • Alice Lovejoy, "Tales of Militant Chemistry: The Film Factory in a Century of War" (U California Press, 2025)

    Alice Lovejoy, "Tales of Militant Chemistry: The Film Factory in a Century of War" (U California Press, 2025)
    Oct 23 2025
    The history of film calls to mind unforgettable photographs, famous directors, and the glitz and hustle of the media business. But there is another tale to tell that connects film as a material to the twentieth century's history of war, destruction, and cruelty. This story comes into focus during World War II at the factories of Tennessee Eastman, where photographic giant Kodak produced the rudiments of movie magic. Not far away, at Oak Ridge, Kodak was also enriching uranium for the Manhattan Project--uranium mined in the Belgian Congo and destined for the bomb that fell on Hiroshima. While the world's largest film manufacturer transformed into a formidable military contractor, across the ocean its competitor Agfa grew entangled with Nazi Germany's machinery of war. After 1945, Kodak's film factories stood at the front lines of a new, colder war, as their photosensitive products became harbingers of the dangers of nuclear fallout. Following scientists, soldiers, prisoners, and spies through Kodak's and Agfa's global empires, Alice Lovejoy links the golden age of cinema and photography to colonialism, the military-industrial complex, radioactive dust, and toxic waste. Revelatory and chilling, Tales of Militant Chemistry shows how film became a weapon whose chemistry irrevocably shaped the world we live in today. Alice Lovejoy is author of the award-winning Army Film and the Avant Garde: Cinema and Experiment in the Czechoslovak Military. A former editor at Film Comment, she is Professor of film and media studies at the University of Minnesota. Caleb Zakarin is editor of the New Books Network. Learn more about your ad choices. Visit megaphone.fm/adchoices
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    46 mins
  • Jonas Enander, "Facing Infinity: Black Holes and Our Place on Earth" (The Experiment Press, 2025)

    Jonas Enander, "Facing Infinity: Black Holes and Our Place on Earth" (The Experiment Press, 2025)
    Sep 23 2025
    Humanity's relationship with black holes began in 1783 in a small English village, when clergyman John Michell posed a startling question: What if there are objects in space that are so large and heavy that not even light can escape them? Almost 250 years later, in April 2019, scientists presented the first picture of a black hole. Profoundly inspired by that image, physicist Jonas Enander has traveled the world to investigate how our understanding of these elusive celestial objects has evolved since the days of Michell. With the particular goal of discovering our human connection to black holes, Enander visits telescopes and observatories, delves deeply into archives, and interviews over 20 world-leading experts, including several Nobel laureates. With Facing Infinity: Black Holes and Our Place on Earth (The Experiment Press, 2025), he takes us on a spellbinding journey into the universe's greatest mystery, deciphers the most mind-bending science, and answers questions surrounding how black holes work, where they come from, and what role they play in the universe. Along the way Enander discovers how our desire to understand black holes inadvertently paved the way for the invention of Wi-Fi and the calibration of our global navigation satellites, how astronomical discovery became entangled with colonial conflicts, and how our looking outward gave us critical evidence of the impact of climate change. Facing Infinity helps us appreciate and understand as never before these mysterious celestial objects and our surprising connections to them. Learn more about your ad choices. Visit megaphone.fm/adchoices
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    1 hr and 6 mins