Big Ideas

Satyajit Das presents a provocative examination of the use and abuse of images of wild animals, and how they shape our relationships with the natural world. These pictures can create an impression of abundance and untouched ecosystems, and lull us into a false sense of security, at a time when the natural world faces ecological calamity.The Attenborough Effect — Shaping Our Relationship With Wild Animals was presented by the Australian National Maritime Museum.Listen to the rest of our special series Animals — Us and Them?Original broadcast on February 20, 2025.SpeakerSatyajit DasAuthor of Wild Quests. Journeys into Ecotourism and the Future for Animalsformer banker, recognised as one of the world's leading financial thinkers.

Prepare to have your mind blown with a sweeping saga that connects human evolution, brains, genes, art, music, creativity, knowledge, dyslexia, autism, Indigenous memory systems, and more. A big, beautiful and biological saga about how to learn like a human again. Joining Natasha Mitchell are Australian Senior Memory Champion, scientist and author Dr Lynne Kelly with artist Jane Rusden and musician and educator Hilary Blackshaw. This event was hosted by the 2024 Mountain Festival in Macedon, Victoria.Original broadcast January 20, 2025.SpeakersDr Lynne KellyScience writerAuthor, The Knowledge Gene: the incredible story of the supergene that gives us human creativity (Allen and Unwin, 2024)Author, The Memory Code (Allen and Unwin, 2016) Adjunct Research Fellow, School of Humanities and Social Sciences, La Trobe UniversityHonorary Fellow, School of Physics, University of MelbourneHilary BlackshawMusician and musical educatorBendigo Musical Instrumental ProgramJane RusdenArtist

Historian Sarah Churchwell takes you on a gripping and confronting journey into America's recent past to explain its extraordinary present, starting with dark story at the heart of that American classic Gone with the Wind. Knowledge lies at the heart of a healthy democracy, and its many custodians include libraries, universities, cultural institutions, and a free and independent media. So what happens when these institutions are intimidated, dismantled or destroyed, as is happening in America, under the government of President Donald Trump?This event was recorded at the University of Technology Sydney's Vice Chancellor's Democracy Forum on 14 May 2025.Original broadcast on June 17, 2025.SpeakersSarah ChurchwellProfessor of American Literature and Chair of Public Understanding of the Humanities at the University of LondonAuthor, The Many Lives of Marilyn Monroe, Careless People: Murder, Mayhem and The Invention of The Great Gatsby, Behold, America: A History of America First and the American Dream, and The Wrath to Come: Gone with the Wind and the Lies America TellsDirector, Being Human festival and Living Literature event seriesJudge, Man Booker PrizeAnna Funder (host)Author, Wifedom, Stasiland and All That I AmLuminary and Ambassador, University of Technology SydneyRoy Green (host)Emeritus Professor and Special Innovation Advisor at University of Technology SydneyFormer Dean of the UTS Business SchoolChair of the UTS Advanced Robotics for Manufacturing HubFurther informationFrom Gatsby to Huck Finn — American literature in an age of polarisation  - Sarah Churchwell on Big Ideas, ABC Radio National 4 November 2024

After five nominations, Ruthie Foster has taken home the 2025 Grammy Award for Best Contemporary Blues Album - affirming her status as an American music legend.  In this intimate conversation, she shares what made her want to be a singer; the roles of her grandmother and mother in her life; why faith is so important to her and why she wants to sing about real people. And much more…A Heartlands Conservation presented at the Blue Mountains Music Festival.Original broadcast May 12, 2025.SpeakersRuthie FosterAmerican singer-songwriter of blues and folk music. 2025 Grammy Award winner for Best Contemporary Blues AlbumGregg Borschmann (host)Writer, radio producer and oral historian for the National Library of Australia

When you enter your childbearing years, it can feel like everyone from the treasurer, your mum, and probably your Instagram reels really wants you to have a kid. But is it the right decision? Few women escape this conundrum of modern family-making, and unfortunately there is no easy or simple answer. But in this talk presented by the Sydney Opera House at the All About Women Festival 2025, you’ll get the context, prompts and profound reflections to help you think through this decision, whether it’s in your own life or for someone you love.  Original broadcast on June 26, 2024

Meet two men who will change the way you think about an experience most of us fear but will be touched by in some way.  In Patting the Shark, surfing writer Dr Tim Baker describes his wild ride to reclaim a sense of control and agency after a cancer diagnosis. Celebrated author and GP Peter Goldsworthy’s memoir The Cancer Finishing School started out as a journal but became so much more.They join Natasha Mitchell for intimate an intimate, revelatory, funny, and generous conversation about the Big C and how medicine needs to change. This event was hosted by the 2024 Queenscliffe Literary FestivalOriginal broadcast on January 22, 2025.SpeakersDr Tim BakerJournalist, editor, patient advocate, and facilitator of the Peter Mac Book GroupResearch Fellow, Prostate Cancer Research Group, Monash Biomedical Discovery InstituteAuthor, Patting the Shark: A surfer's journey — learning to live well with cancer (Ebury Australia/Penguin, 2022)Dr Peter GoldsworthyGP, author, librettist, poetAuthor, The Cancer Finishing School —lessons in laughter, love, resilience (Penguin, 2024)

Are fermented foods really good for us? Do antibiotics destroy our gut flora? And have you heard about poo transplants?Our gut is teeming with trillions of microbial cells, and we are learning more all the time about how this affects everything from our digestion, to immunity, to mental health.So crack open your kombucha, because these leading researchers will cut through the noise with some hard facts and pioneering science about the microbiome.This event was recorded at the World Science Festival Brisbane 30 March 2025.Original broadcast on June 25, 2025.SpeakersPaul GriffinProfessor of Medicine, Clinical Unit Head and Director of Infectious Diseases, University of Queensland and Mater HospitalFelice JackaDistinguished Professor in Nutritional PsychiatryFounder and director, Food and Mood Centre Deakin UniversityAuthor, There's a Zoo in my PooGene TysonMicrobial ecologist, bioinformatician, and founder, Centre for Microbiome research, Queensland University of TechnologyDr Norman Swan (host)Presenter, Health Report and What's That Rash? ABC Radio National

Doctor Who has acted as a mirror to more than six decades of social, technological and cultural change. It's been able to evolve and adapt more radically than any other fiction. Why we are so addicted to fiction, and why does this wonderful wandering time traveller mean so much to so many. This talk was provided by the York Festival of Ideas. The Festival is led by the University of York, UK.Original broadcast on July 21, 2025.SpeakerJohn HiggsAuthor of Exterminate/Regenerate: The Story of Doctor Who (Weidenfeld & Nicolson 2025)

The connection between body and mind is well established. But mental health expert Daniel Fung also includes the soul in this 'ecosystem' that shapes your overall wellbeing. He envisions a future for mental health services, that is person-centred, holistic and consciously uses digital tools and social media.Beautiful minds, Loving hearts: Asian Mental Health Ecosystems in 2050 was presented at TheMHS (Mental Health Services) conference 2025 in BrisbaneListen to Big Ideas — How to overcome the fear and anxiety that are holding you backSpeakersDaniel Fung - CEO Institute of Mental Health, SingaporeBarbara Disley - Board Member, TheMHS Learning NetworkFurther informationMindline - digital first-stop touchpoint for mental health in Singapore

From innocently conning controversial radio duo Kyle and Jackie O as a kid, time in a Zambian convent as a teen, to nearly becoming an air traffic controller before finding her real passion - helping others find their voice - Astrid Jorgensen has quite a story to tell. Her new memoir is called Average At Best. She is anything but. She is anything but. On any one night, anywhere in the world, you’ll find Astrid on a stage in front of a few thousand people singing their hearts out. But to call Astrid Jorgensen a choir conductor doesn’t really capture the incredible global phenomenon she’s created.  She’s the founder, composer, and host of Pub Choir, described as the “world’s biggest one night stand in song”. This event was organised by Northern Books in Castlemaine and held at the Fitzroy Town Hall in Naarm/Melbourne.SpeakerAstrid JorgensenFounder and conductor of Pub ChoirAuthor, Average At Best (Simon and Schuster Australia, 2025)Further informationHow Astrid Jorgensen turned a suburban pub choir into a worldwide musical phenomenon (Australian Story/ABC News, 2025)Watch Australian Story episode about Astrid on Youtube (2025)

Australia now has its first treaty with this country's first peoples. After nearly a decade of formal consultation and negotiation, the Victorian Statewide Treaty has become law, and will come into effect from early December. This address outlines the long road to achieving the treaty, why it's important, and what comes next.The 25th Dr Charles Perkins Oration was recorded on 28 October 2025 at the University of Sydney.SpeakersNgarra MurrayCo-chair, Victorian First People's Assembly

Humans are by nature creative, but how do we turn a spark of inspiration into something more tangible? Author Emily Maguire draws inspiration from some of the world's most creative minds — from Lin Manuel Miranda, to Susan Sontag, to explore the ingredients of a truly creative life.The 2025 Colin Roderick Memorial Lecture, hosted by the Foundation of Australian Literary Studies at James Cook University in partnership with the Australian Festival of Chamber Music, was recorded on 29th July 2025 in Townsville.SpeakersEmily MaguireAuthor, Rapture, An Isolated Incident, Love Objects, and moreTeacher of writing, Writing NSWThe Vanya QuartetElder Conservatorium, University of AdelaidePlaying Saoirse, composed by Belle Smibert

As we grow older, changes to our bodies and minds are inevitable. But what if science could help us age better? Our experts on Big Ideas uncover the latest science behind healthy brain aging. What's possible in the fight against cognitive decline and dementia? How might you live a longer, healthier, and more meaningful life?Presented by Sydney Ideas, the talk program at the University of SydneySpeakersAssociate Professor Eleanor DrummondSenior Lecturer (Neuroscience), School of Medical Sciences, University of SydneyOlivier PiguetNHMRC Leadership Fellow and Professor of Clinical Neuropsychology, University of SydneyGilbert KnaggsSociology PhD candidate, University of SydneyElfy Scott (host)award-winning journalist, podcaster, and presenter

When acclaimed Australia author Christos Tsiolkas was invited to give the 2025 Ray Mathew Lecture at the National Library of Australia, he had in mind what he wanted to say, as difficult as it was. Then he got a rage-filled message from a longtime friend. How did Christos respond? Is fence-sitting an indulgence in an ethically troubled, divisive, dislocated world? Or, is 'speaking across the fence' something writers and other creatives can offer us?"We're urged at all times — and for every occasion — to take a position. Yet is there a utility, both practical and ethical, in taking a breath, a pause, and refusing to land definitively on a stance?"  — Christos TsiolkasSpeakerChristos TsiolkasAuthor of The Slap, The In Between, Barracuda, DamascusPlaywright and screenwriterFurther informationMore about the annual Ray Mathew Lecture, including the transcript and video of the 2025 lecture

From The Don to Warny, the Gabba to the G, from its legacy of British colonialism, to the Asian powerhouse nations of today — cricket is not just a sport, but also a reflection of the societies who play it. Drawing on a wealth of writing about the sport, including novels, biographies, and media reporting, this lecture explores the cultural and historical legacy of cricket.This event was recorded at the Australian Catholic University on 30 October 2025.SpeakersPaul Giles Professor of English, Australian Catholic UniversityGideon Haigh Journalist and author of The Cricket War, The Summer Game and On WarneEditor and host, Cricket Et Al podcast and newsletterOpening batsman, South Yarra Cricket Club

Born in apartheid South Africa, she became the country's first female high court judge. She sat on the International Criminal Tribunal for Rwanda, and helped to establish sexual violence and rape as war crimes in international law. At a time of global conflict and instability, the work and achievements of Navi Pillay are a reminder of what can be achieved when accountability trumps impunity, when the law defeats lawlessness, and justice prevails over injustice.The 2025 Sydney Peace Prize Lecture, hosted by the Sydney Peace Foundation, was recorded at the Sydney Town Hall on 6 November 2025.SpeakersNavi PillayFormer Chair of the United Nation's Commission of Inquiry on the Occupied Palestinian TerritoryFormer United Nations High Commissioner for Human RightsFormer President and Judge of the International Criminal Tribunal for RwandaSouth Africa's first female High Court JudgeChris SidotiMember of the United Nation's Commission of Inquiry on the Occupied Palestinian TerritoryFormer Australian Human Rights CommissionerFormer Chair of the Australian Law Reform CommissionRawan ArrafFounder and Executive Director of the Australian Centre for International JusticeNour Haydar (host)Journalist and co-host, Full Story, Guardian Australia

Young Australians are losing faith that our politics, our civic institutions and the mainstream media are working for them. Why is this? And how can our democracy adapt to win back the trust and engagement of new generations?The 2025 Speaker's Lecture was recorded at Parliament House on 27 October 2025.SpeakersHolly Rankin - Musician and recording artist Jack River, founder, Sentiment, director, Teach Us ConsentMilton Dick - Speaker of the House of Representatives, Labor Member for OxleyFurther information:SOS Democracy with Niki Savva — Can politicians and journalists do better?2024 Speaker's Lecture - Big Ideas, ABC Radio National, 15 October 2024

Are our universities facing an existential crisis by trying to be too many things? Places for learning, research, the production of new knowledge, the production of job-ready graduates, and profit-making enterprises? Does everything they do have to produce a tangible, measurable, practical, or profitable outcome? Should they also foster intellectual life and the pursuit of ideas just for curiosity's sake? Or is that an elite, outdated mission? Who gets to judge what knowledge is deemed useless or useful? Join Big ideas host Natasha Mitchell with guests to mark the 25th anniversary of the Institute of Advanced Studies at the University of Western Australia.SpeakersAssociate Professor Oron Catts, Academic lead of the Institute of Advanced Studies, pioneering artist and founder of Symbiotica: The Centre of Excellence in Biological ArtsDr Jessyca Hutchens, Palyku woman, art historian, indigenous studies lecturer and co-director of the Berndt Museum, University of Western Australia.Terri-Ann White, former founding director of the Institute for Advanced Studies, former head of UWA Publishing, and founder of the independent publishing house UpswellFurther readingThe Usefulness of Useless Knowledge by Abraham Flexnor (Harpers, 1939)Famous educator and reformer Abraham Flexnor was founder of the first Institute for Advanced Study in 1930. Albert Einstein was a member of its founding faculty and at least 37 Nobel Laureates have found an intellectual home there since.

We often hear about "failing schools", but what if it is us, the Australian community, who are failing them?  Public school advocate Jane Caro argues that Australia's pursuit of school choice, and the tax payer funding that enables it, has come at a huge cost to the school system, to children's education, and to our broader society.The 2025 Dymphna Clark Lecture at Manning Clark House was recorded on 26 August 2025.SpeakersJane Caro — Author, The Mother, Lyrebird, What Makes a Good School? and more, columnist, commentator, former advertising copywriter, academic, public schools advocate

Join ABC's Mon Schafter and four incredible speakers as they share honest, powerful stories about revealing their identities on their own terms. From fear to freedom, isolation to community - this is a conversation about truth, courage, and connection. Held in recognition of 40 years of ACON, it celebrates every journey of coming out and shines a light on personal stories, collective resilience, and the power of being seen.SupportIf this conversation raises any concerns for you, QLife is an Australia-wide anonymous and free peer support service for LGBTIQ+ people. Call 1800 184 527 or webchat 3pm-9pm every day at qlife.org.auABCQueer’s list of LGBTQIA+ community support services in Australia.SpeakersNina OyamaAustralian comedian, writer, actress and directorJi WallaceAustralian trampoline gymnast and Olympic silver medallistZoe TerakesAustralian actor; author of Eros: Queer Myths for LoversDr Atari MetcalfGP in NSWMon Schafter (host)Walkley Award-winning journalist, presenter and producer, founding editor of ABC Queer