211 | Solo: Secrets of Einstein's Equation

Astronomers rocked the cosmological world with the 1998 discovery that the universe is accelerating. Well-deserved Nobel Prizes were awarded to Saul Perlmutter, Brian Schmidt, and today’s guest Adam Riess. Adam has continued to push forward on investigating the structure and evolution of the universe. He’s been a leader in emphasizing a curious disagreement that threatens to grow into a crisis: incompatible values of the Hubble constant (expansion rate of the universe) obtained from the cosmic microwave background vs. direct measurements. We talk about where this “Hubble tension” comes from, and what it might mean for the universe.Support Mindscape on Patreon.Adam Riess received his Ph.D. in astronomy from Harvard University. He is currently Bloomberg Distinguished Professor and Thomas J. Barber Professor of Physics and Astronomy at Johns Hopkins University and a Senior member of the Science Staff at the Space Telescope Science Institute. Among his many awards are the Helen B. Warner Prize of the American Astronomical Society, the Sackler Prize, the Shaw Prize, the Gruber Cosmology Prize, the MacArthur Fellowship, the Breakthrough Prize in Fundamental Physics, and the Nobel Prize.Johns Hopkins web pageSpace Telescope Science Institute web pageNobel LectureGoogle Scholar publicationsTalk on the expansion rate of the universeWikipediaSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

12 Okt 20201h 18min

Evolution is a messy business, involving as it does selection pressures, mutations, genetic drift, and the effects of random external interventions. So in the end, how much of it is predictable, and how much is in the hands of chance? Today we’re thrilled to have as a guest my evil (but more respectable, by most measures) twin, the biologist Sean B. Carroll. Sean is both a leader of the modern evo-devo revolution, and a wonderful and diverse writer. We talk about the importance of randomness and unpredictability in life, from the evolution of species to the daily routine of every individual.Support Mindscape on Patreon.Sean B. Carroll received a Ph.D. in immunology from Tufts University. He is currently the Andrew and Mary Balo and Nicholas and Susan Simon Endowed Chair of Biology at the University of Maryland, Vice-President for Science Education at the Howard Hughes Medical Institute, the Executive Director of HHMI Tangled Bank Studios, and Professor Emeritus of Genetics and Molecular Biology at the University of Wisconsin. His new book, A Series of Fortunate Events: Chance and the Making of the Planet, Life, and You, explores the role of chance in the development of life.Web siteHHMI web pageGoogle Scholar publicationsTangled Bank StudiosTalk on The Serengeti RulesAmazon author pageWikipediaTwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

5 Okt 20201h 20min

How can, and should, we talk to each other, especially to people with whom we disagree? “Free speech” is rightfully entrenched as an important value in liberal democratic societies, but implementing it consistently and fairly is a tricky business. Political theorist Teresa Bejan comes to this question from a philosophical and historical perspective, managing to relate broad principles to modern hot-button issues. We talk about the importance of tolerating disreputable beliefs, the senses in which speech acts can be harmful, and how “civility” places demands on listeners as well as speakers.Support Mindscape on Patreon.Teresa Bejan received an M.Phil. in Political Thought and Intellectual History from Cambridge and a Ph.D. in Political Science from Yale. She is currently Associate Professor of Political Theory and Fellow of Oriel College at the University of Oxford. Among her awards are the American Political Science Association’s Leo Strauss Award for the best dissertation in political philosophy and the inaugural Early Career Prize for the greatest overall contribution to research and teaching in political thought from the Britain & Ireland Association for Political Thought. Her book Mere Civility: Disagreement and the Limits of Toleration considers political speech through the lens of early modern debates about religious liberty.Web siteOxford web pageMere CivilityGoogle Scholar publicationsWikipediaTalk on “What Was the Point of Equality?”TwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

28 Sep 20201h 43min

Stephen Hawking made a number of memorable contributions to physics, but perhaps his greatest was a puzzle: what happens to information that falls into a black hole? The question sits squarely at the overlap of quantum mechanics and gravitation, an area in which direct experimental input is hard to come by, so a great number of leading theoretical physicists have been thinking about it for decades. Now there is a possibility that physicists might have made some progress, by showing how subtle effects relate the radiation leaving a black hole to what’s going on inside. Netta Engelhardt is one of the contributors to these recent advances, and together we go through the black hole information puzzle, why wormholes might be important to the story, and what it all might teach us about quantum gravity.Support Mindscape on Patreon.Netta Engelhardt received her Ph.D. in physics from the University of California, Santa Barbara. She is currently on the faculty in the physics department at MIT. She recently shared the New Horizons in Physics Prize with Ahmed Almheiri, Henry Maxfield, and Geoff Penington, “for calculating the quantum information content of a black hole and its radiation.”MIT web pageinSPIRE publicationsTalk on Black Hole InformationNew Horizons PrizeToday’s episode is sponsored by LinkedIn Jobs (http://linkedIn.com/mindscape) and The Great Courses Plus (http://thegreatcoursesplus.com/mindscape). Follow these links for exclusive offers.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

21 Sep 20201h 26min

Sexuality is, and always has been, a topic that is endlessly fascinating but also contentious. You might think that asexuality would be more straightforward, but you’d be wrong. Asexual people, or “aces,” haven’t been front and center in the public discussion of gender and sexuality, and as a result there is confusion about such basic issues as what “asexuality” even means. Angela Chen is a science journalist and an ace herself, and she’s written a new book about asexuality and how it fits into the wider discussion of sex and gender. Precisely because sexuality is so taken for granted by many people, thinking about asexuality not only helps us understand the issues confronting aces, but the meaning of sexuality more broadly.Support Mindscape on Patreon.Angela Chen received a B.A. in comparative literature from UC San Diego. She is a contributing editor at Catapult magazine, and her writings have appeared in The Wall Street Journal, Vox Media, The Atlantic, MIT Technology Review, and elsewhere. Her new book is Ace: What Asexuality Reveals about Desire, Society, and the Meaning of Sex.Web siteAmazon.com author pageTwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

14 Sep 20201h 8min

You can’t always get what you want, as a wise person once said. But we do try, even when someone else wants the same thing. Our lives as people, and the evolution of other animals over time, are shaped by competition for scarce resources of various kinds. Game theory provides a natural framework for understanding strategies and behaviors in these competitive settings, and thus provides a lens with which to analyze evolution and human behavior, up to and including why racial or gender groups are consistently discriminated against in society. Cailin O’Connor is the author or two recent books on these issues: Games in the Philosophy of Biology and The Origins of Unfairness: Social Categories and Cultural Evolution.Support Mindscape on Patreon.Cailin O’Connor received her Ph.D. in Philosophy from the University of California, Irvine. She is currently Associate Professor of Logic and Philosophy of Science and a member of the Institute for Mathematical Behavioral Science at UCI. Her works involves questions in the philosophy of biology and behavioral science, game theory, agent-based modeling, social epistemology, decision theory, rational choice, and the spread of misinformation.Web siteGoogle Scholar publicationsPhilPeople ProfileTalk on how misinformation spreadsAmazon author pageTwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

7 Sep 20201h 19min

Not too long ago nobody carried a mobile phone; now almost everybody does. That’s the kind of rate of rapid progress we’re seeing with our ability to directly edit genomes. With the use of CRISPR-Cas9 and other techniques, gene editing is becoming commonplace. How does that work — and perhaps more importantly, how are we going to put it to use? Fyodor Urnov has worked in this area from its beginning, having coined the term “gene editing.” We talk about how this new technology can be used to cure or prevent disease, as well as the pros and cons of designer babies.Support Mindscape on Patreon.Fyodor Urnov received his Ph.D. in Biology from Brown University. He is currently professor of Genetic, Genomics, and Development in the Department of Molecular and Cell Biology at UC Berkeley, as well as Director for Technology and Translation at the Innovative Genomics Institute. His research focuses on using CRISPR gene-editing techniques to develop treatments for sickle cell disease, radiation injury, and other conditions, as well as guiding IGI researchers as they bring these therapies from the lab to the clinic.Web pageGoogle Scholar publicationsInnovative Genomics InstituteTalk on “The Next Generation of Edited Humans”TwitterTodays episode is sponsored by The Great Courses Plus. Mindscape listeners get a free trial if they sign up at http://thegreatcoursesplus.com/mindscape.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

31 Aug 20201h 20min

Human civilization is only a few thousand years old (depending on how we count). So if civilization will ultimately last for millions of years, it could be considered surprising that we’ve found ourselves so early in history. Should we therefore predict that human civilization will probably disappear within a few thousand years? This “Doomsday Argument” shares a family resemblance to ideas used by many professional cosmologists to judge whether a model of the universe is natural or not. Philosopher Nick Bostrom is the world’s expert on these kinds of anthropic arguments. We talk through them, leading to the biggest doozy of them all: the idea that our perceived reality might be a computer simulation being run by enormously more powerful beings.Support Mindscape on Patreon.Nick Bostrom received his Ph.D. in philosophy from the London School of Economics. He also has bachelor’s degrees in philosophy, mathematics, logic, and artificial intelligence from the University of Gothenburg, an M.A. in philosophy and physics from the University of Stockholm, and an M.Sc. in computational neuroscience from King’s College London. He is currently a Professor of Applied Ethics at the University of Oxford, Director of the Oxford Future of Humanity Institute, and Director of the Oxford Martin Programme on the Impacts of Future Technology. He is the author of Anthropic Bias: Selection Effects in Science and Philosophy and Superintelligence: Paths, Dangers, Strategies.Web siteOxford web pageWikipediaAmazon author pageTalk on the Simulation ArgumentSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

24 Aug 20201h 20min