Can science keep dementia at bay and keep your brain sharper − for longer?
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
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Acclaimed author Christos Tsiolkas on fence-sitting in a time of fracture
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
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The stories we tell about cricket — with Paul Giles and Gideon Haigh
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
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Judge Navi Pillay on the fight for human rights, justice and accountability
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
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Musician Holly Rankin on why young Australians feel that politics isn't delivering for them
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
Feed your mind. Be provoked. One big idea at a time. Your brain will love you for it. Grab your front row seat to the best live forums and festivals with Natasha Mitchell.
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