“When Galaxies Were Born: The Quest for Cosmic Dawn” with Professor Richard Ellis

The universe is full of mysteries that scientists are still trying to understand. In the constellation of Eridanus, astronomers have discovered a strange region that looks like a giant hole in space. What caused it? This is just one of many fascinating questions about the universe. In “What's Eating the Universe?”, famous cosmologist Paul Davies explores some of the biggest mysteries of space, including enormous black holes, disappearing regions of the universe, and the possibility of one universe swallowing another. He also explores two of the most important questions in science: Why does the universe exist, and how did lifeless particles eventually produce intelligent beings capable of thinking and questioning their existence? Through exciting discoveries and thought-provoking ideas, this book takes readers on a journey through space and time, encouraging curiosity about the universe, its origins, and the mysteries that remain unsolved. In this episode of Bridging the Gaps, I speak with Professor Paul Davies. Paul Davies is a theoretical physicist, cosmologist, astrobiologist, broadcaster, and best-selling author. A winner of the prestigious Templeton Prize, he is Regents’ Professor of Physics and director of the Beyond Center for Fundamental Concepts in Science at Arizona State University. Our conversation begins with a discussion about the structure of the book. Unlike his previous books, which explore specific topics through longer chapters, this book features short, accessible chapters, each addressing a fascinating question about the cosmos. I then ask Paul about the intriguing title: What exactly is eating the universe? This leads us to explore the large-scale structure of the cosmos and the remarkable mathematical precision of its physical laws. We discuss whether mathematics is something humans invent or discover, and how mathematical principles help us understand the universe. Next, we explore the nature of information and whether it might be a fundamental feature of reality. Our discussion then turns to the relationship between physics and biology. Can existing physical laws fully explain life, or do we need new physics? We also examine Paul's view of life as a system that processes and replicates information, leading to one of science's greatest mysteries: How did life begin? We then consider the search for extraterrestrial intelligence and two possible outcomes: discovering that we are not alone or finding that life may be unique to Earth. I ask Paul which possibility he would find more troubling. Towards the end, we explore some of the deepest questions raised in the book: Does the universe have meaning or purpose? How does consciousness emerge from physical processes? And will scientists ever develop a unified theory of everything? Overall, this has been a fascinating and thought-provoking conversation, exploring the mysteries of the universe, the origins of life, and the fundamental nature of existence. Complement this discussion with ““Ten Patterns That Explain the Universe” and “Ten Days in Physics That Shook the World” with Brian Clegg” available at: https://www.bridgingthegaps.ie/2026/07/ten-patterns-that-explain-the-universe-and-ten-days-in-physics-that-shook-the-world-with-brian-clegg/ And then listen to ““Welcome to the Universe in 3D: A Visual Tour” with Neil deGrasse Tyson” available at: https://www.bridgingthegaps.ie/2024/12/welcome-to-the-universe-in-3d-a-visual-tour-with-neil-degrasse-tyson/

The human brain evolved for a prehistoric world, not for the demands of the digital age. Yet modern technologies constantly compete for our attention. They exploit ancient systems linked to reward, emotion, comparison, and survival. In his new book, “Your Stone Age Brain in the Screen Age”, Professor Richard Cytowic explores this conflict. He explains why the brain struggles to resist smartphones, social media, and other digital devices. He also examines why developing brains are particularly vulnerable and why periods of silence remain essential. In this episode of Bridging the Gaps, I speak with Professor Richard Cytowic. Richard E. Cytowic, a pioneering researcher in synesthesia, is Professor of Neurology at George Washington University. He is best known for rediscovering synesthesia —the involuntary coupling of the senses—and returning it to mainstream science. He coauthored “Wednesday Is Indigo Blue” that won the Montaigne Medal. I begin by asking Richard about the brain’s energy consumption, particularly in relation to attention, information overload, and digital distraction. We also compare the brain’s energy demands with those of other organs and bodily functions. The book opens with a description of a typical day in the life of a Stone Age human. This leads us to consider a central question: how does an ancient brain function in a radically modern environment? We discuss how people respond to new technologies and why innovations are often adopted so quickly. The conversation then turns to digital distraction. Richard explains what happens when the brain repeatedly shifts attention and why true multitasking is difficult. We also examine the effects of blue light, the pursuit of happiness through digital devices, and the growing influence of the attention economy. A particularly striking part of the discussion concerns “virtual autism.” We explore whether excessive screen use and reduced social interaction can produce behaviours that resemble signs associated with autism. We also discuss the idea of engineered addiction and ask whether digital detoxes are genuinely effective. The discussion then considers possible solutions. These include spending more time in nature, engaging directly with other people, reducing reliance on digital devices, and creating space for silence and reflection. We examine why solitude and quiet may be essential for mental balance. Finally, Richard explains synaesthesia and how it reveals the brain’s remarkable ability to connect different sensory experiences. Overall, the conversation offers an insightful exploration of attention, technology, behaviour, and the continuing influence of our evolutionary past. Complement this discussion with ““On Task: How Our Brain Gets Things Done” with Professor David Badre” available at: https://www.bridgingthegaps.ie/2021/02/on-task-how-our-brain-gets-things-done-with-professor-david-badre/ And then listen to ““Zero to Birth: How the Human Brain Is Built” with Professor William Harris” available at: https://www.bridgingthegaps.ie/2022/10/zero-to-birth-how-the-human-brain-is-built-with-professor-william-harris/

Evolution is often described as a process of constant improvement. Yet many features of human biology challenge this assumption. Genetic diseases remain common. Large parts of our DNA appear to serve no clear purpose. Pregnancy is also highly inefficient, and many fertilised eggs do not survive. These apparent flaws raise wider questions about how evolution works. Are they failures of natural selection, or are they predictable outcomes of evolutionary processes? What role do pregnancy, population size, mutation, and chance play in shaping the human genome? In his book, “The Evolution of Imperfection: The Science of Why We Aren’t and Can’t Be Perfect” evolutionary geneticist Laurence Hurst examines these questions. He explores how genetic medicine may reduce the effects of these inherited weaknesses. By examining the apparent failures of evolution, the book offers a deeper account of natural selection and a richer understanding of what it means to be human. In this episode of Bridging the Gaps, I speak with Professor Laurence Hurst. Laurence Hurst is professor of evolutionary genetics in the Milner Centre for Evolution at the University of Bath. His research on how genetic systems evolve, and the application of this knowledge to medicine, has been recognized with national and international prizes and fellowships. We begin by discussing several evolutionary imperfections examined in the book. I then ask Laurence to explain what DNA is and how it contributes to evolution. His explanation provides a foundation for the rest of the conversation. We return to the question of imperfection and examine it through the lens of genetics. We discuss the biological challenges of pregnancy and the complex interaction between the embryo and the mother. Laurence explains why some of these processes appear counterintuitive. We also discuss the role of chance in shaping evolutionary outcomes. The conversation also explores so-called “junk DNA,” the sections of the genome whose functions remain unclear. We then turn to emerging technologies, including gene therapy and CRISPR. We consider how fair and equal access to these tools could help address genetic diseases and inherited imperfections. The discussion offers an insightful exploration of several complex ideas in evolution, genetics, and modern medicine. Complement this discussion with “The Evolution of Biological Information: How Evolution Creates Complexity, from Viruses to Brains” with Professor Christoph Adami available at: https://www.bridgingthegaps.ie/2024/12/the-evolution-of-biological-information-christoph-adami/ And then listen to “The Network of Life: A New View of Evolution” with Professor David Mindell available at: https://www.bridgingthegaps.ie/2024/10/the-network-of-life-a-new-view-of-evolution-with-professor-david-mindell/

The universe may appear chaotic. Yet beneath this apparent disorder lies a vast network of rules. These rules shape patterns of action, force, and consequence. In “Ten Patterns That Explain the Universe”, popular science writer Brian Clegg examines the systems that govern the physical world. He focuses on ten essential patterns that reveal how the universe is structured and how it behaves. The book explores the relationship between space and time, the quantum behaviour of matter and light, and the origins of the cosmos. It explains how the cosmic microwave background, often described as the “echo of the Big Bang,” provides evidence about the early universe. It also shows how the periodic table reflects the underlying structure of atoms. Through clear explanations, detailed illustrations, and informative diagrams, Clegg presents a distinctive view of the universe and its fundamental workings. In this episode of Bridging the Gaps, I speak with Brian Clegg. We also discuss his book “Ten Days in Physics That Shook the World”, which examines pivotal moments when major scientific breakthroughs transformed our understanding of reality and reshaped everyday life. Brian Clegg is an award-winning popular science writer and the author of more than thirty books. I begin by asking Brian what inspired him to write popular science books. We then discuss the title of Ten Patterns That Explain the Universe. We explore what constitutes a pattern and how patterns can help us understand the workings of the universe. Drawing on a question often raised in mathematics, I ask whether these patterns exist independently and are discovered by us, or whether they are created through human interpretation. We then examine several patterns discussed in the book. We begin with the cosmic microwave background, the residual heat left in the universe after the Big Bang. Brian also includes several diagrams among the patterns presented in the book. I ask why diagrams, which are human-made representations, should be regarded as patterns that explain the universe. We discuss diagrams associated with quantum mechanics and consider what they reveal about events at the quantum level. The conversation then turns to the patterns found in the periodic table. We consider whether the table could have been organised in other ways. We also discuss the double-helix structure of DNA and examine the many forms of symmetry found in nature. Brian explains why symmetry is his favourite pattern. We then focus on Brian’s other book, Ten Days in Physics That Shook the World: How Physicists Transformed Everyday Life. I ask which of the ten days he considers the most significant. We also discuss the book’s final example: the establishment of the first internet connection. The discussion concludes with the challenges created by information overload, misinformation, and disinformation. We consider the importance of public understanding of science and the role of effective science communication. I ask Brian which approaches are most successful, particularly within research and academic institutions. We also examine who should be responsible for communicating scientific findings: the original researchers or specialist science communicators. Complement this discussion with “Sharing Our Science: How to Write and Speak STEM” with Professor Brandon Brown available at: https://www.bridgingthegaps.ie/2024/02/sharing-our-science-how-to-write-and-speak-stem-with-professor-brandon-brown/ And then listen to On Public Communication of Science and Technology with Professor Bruce Lewenstein available at: https://www.bridgingthegaps.ie/2022/02/on-public-communication-of-science-and-technology-with-professor-bruce-lewenstein/

How does the brain produce consciousness? Why should electrical and chemical activity in the brain give rise to thoughts, emotions, colors, sounds, and the feeling of being alive? Despite major advances in neuroscience, the inner nature of experience remains difficult to explain. Modern science can describe the brain’s physical processes in great detail, but it still struggles to explain why those processes are accompanied by subjective awareness. The book “Galileo’s Error: Foundations for a New Science of Consciousness” by Professor Philip Goff takes this problem as its starting point. Goff argues that the difficulty may lie not simply in our lack of scientific knowledge, but in the way modern science has defined the physical world since Galileo. By separating matter from subjective experience, science became highly successful at explaining the measurable world, but left consciousness outside its basic picture of reality.