Big Ideas

In the 1930s, New Zealand-born, Cambridge educated Arthur Dale Trendall carved a niche for himself as the world's foremost expert in the study of ancient South Italian vase painting. How then, did he end up leading a crack team of code-breakers working in Melbourne to decipher Japanese messages for the Allies during the Second World War? This lecture was recorded at Melbourne's Shrine of Remembran...

When it was founded in 2015, openai — the company behind Chat GPT — had a mission to develop artificial intelligence tools that would benefit humanity. But somewhere along the way, that mission changed.  While the use of AI in our daily lives is increasingly pervasive, the technology's toll on the environment, human rights, copyright, privacy and workers and resources in the global south is starti...

ABC Radio National's CITIZEN JURY takes hard, hot-button issues affecting a community — and places citizens at the centre of finding solutions. It's citizen-driven democracy in action! Tasmanian salmon is on dinner plates across Australia. It's a 1.4 billion-dollar industry producing jobs for Tasmanians, and more than 70, 000 tonnes of fish annually — with plans for expansion.  But salmon farming...

In 1975, aged just 29, she wrote a bestselling book that changed Australia. Since then, she's courted controversy and acclaim, but Anne Summers has never given up the fight for gender equality. This conversation was recorded live at the 2025 Sydney Writers' Festival . Speakers Dr Anne Summers Author, Damned Whores and God's Police , Ducks on the Pond: An Autobiography 1945-1976, The Misogyny Facto...

When people say or do the wrong thing, we have laws and a legal system that should be able to deliver consequences and, hopefully justice. But in this digital age, the human instinct to inflict punishment in the court of public opinion has reached fever pitch. So do we want to live by mob rule, or the rule of law? The 2025 James Merralls Fellowship in Law Lecture , hosted by the University of Melb...

For all of human history, space has been a place of mystery, awe and fascination. But unless you're an astronaut, a billionaire, or a pop star, most of us will never have the opportunity to travel there — except in our minds. This conversation features two writers who've used the perspective of space to explore our humanity, Earth's place in the universe, and the meaning of it all. The conversatio...

Have you ever visited an art gallery full of wonder, ready to be inspired, only to leave feeling like it was all a bit over your head? You're about to meet one writer whose new book of essays rejects the over-complication and gets to the messy, human heart of art. What Artists See is a collection of essays from award-winning arts writer and critic Quentin Sprague, canvassing twelve contemporary Au...

When a child is born, so too is a mother. This idea, known as "matrescence", was first conceived in the 1970s by American medical anthropologist Dana Raphael. Parenting in 2025 looks very different in many ways,  the scientific evidence now supports the theory that women undergo radical physiological, psychological and social changes during pregnancy, childbirth, and motherhood. This conversation...

He was undefeated in battle and established one of the largest empires in history. But his legacy goes beyond his military conquests. He increased trade between East and West, spread the Greek civilisation and founded cultural centres that still thrive today. Learn more about Alexander the Great's life, personality and impact with a fresh perspective on his reign, including the vital roles that ot...

She became the third ever woman to win a Nobel Prize in Physics in 2018, and the first in 50 years. This is the story of how Donna Strickland became a "Laser Jock", and why she's now on a mission to restore trust in science. This event was recorded at the Centre for Ideas at the University of New South Wales . Speakers Donna Strickland Professor in the Department of Physics and Astronomy at the Un...

Ziggy Ramo is an award-winning musician and author whose latest book titled Human?: A lie that has been killing us since 1788 weaves song, visual art and personal history to present a new way of looking at this country’s past.  Led by Mparntwe and Alice Springs-based poet Laurie May, Ziggy reflects on the project and where it took him at the Byron Writers Festival . Each chapter of Human? is a mul...

2025 is a landmark year for Australian privacy law. The new statutory tort for serious invasions of privacy came into effect in June this year. This could be a breakthrough providing you with a better way to protect your privacy interests through the court system. Big Ideas digs deep into its origins, its inspirations, and its potential future. Presented at the Queensland University of Technology....

This rollicking history traces the evolution of the London stock exchange, from the Transatlantic slave trade to modern day missions to Mars, arguing that the financial markets wield the power to bring down governments, and shape our societies, for better and for worse. This lecture was recorded at the Australian National University . Speakers Philip Roscoe Author, How to Build a Stock Exchange: T...

She's on a bank note (British 10 pounds), and a bath soap (Suds and Sensibility), and she also wrote some of the most beloved novels in English literature. Why has Jane Austen become such an enduring cultural force, and what makes us return to her works time and time again? This event , celebrating 250 years since Jane Austen's birth, was recorded at the National Library of Australia on 20 August...

Is the end of the world nigh, or just the end of the world as we know it? Are we set to doom-scroll our way to apocalypse? Or is this the moment we wake up to ourselves, change course, and save the planet? Don't miss this hilarious battle of brains and bravado when two teams join Big Ideas' host and science journalist Natasha Mitchell at Hobart City Hall for the annual Beaker Street Festival Great...

Conflict and great power rivalries are on the rise, democracy is in retreat, and multilateral institutions created to maintain global cooperation appear increasingly toothless. So is the world as we've known it coming to an end? And if so, what will replace it? This speech was recorded at the University of Queensland on 17 September 2025. Speaker Andrew Phillips Professor of international relation...

The Democratic Party in America is in an identity crisis. It's shifting priorities to claw back grounds from the Republicans. But is it too little, too late? How can the Democrats respond to a radicalising and increasingly authoritarian-minded Republican Party? The Future of America's Democratic Party presented by the American Academy in Berlin Speakers Jacob S. Hacker Stanely B. Resor Professor o...

From Rodrigo Duterte, to Narendra Modi, to Donald Trump, strongman leaders around the world are harnessing big tech to consolidate their power. Social media is also being used to energise and organise resistance movements, but is the bad increasingly outweighing the good? The 2025 Southeast Asia Oration Media Freedom and Democracy in Southeast Asia was held at the University of Melbourne, in partn...

If a stiff dose of medical misinformation is what you're after, look no further than the White House right now. And, on social media and in online forums, countless conspiracy theories reign supreme. In this "post-truth" era, has science lost its authority, or have we lost sight of what scientific proof actually involves? From debates over the origins of our species to conspiracies surrounding the...

The Beatles shook the world to its core in the 1960's and, to this day, new generations continue to fall in love with their songs and their story. At the heart of this phenomenon lies the dynamic between John Lennon and Paul McCartney. Few other musical partnerships have been rooted in such a deep, intense and complicated personal relationship. Ian Leslie uses the songs they wrote to trace the sha...

The world feels more dangerous and unpredictable, but with Australia wedged between our traditional ally, America, and our biggest trading partner, China, does our most expensive ever defence project make us more secure, or less? The 2025 Laurie Carmichael Lecture , Australian Sovereignty and the Path to Peace, was recorded on Wednesday 10 September 2025, with thanks to the Australia Institute's C...

A frank and impassioned plea for peace by Gareth Evans. As Australia's former Foreign Minister and former president of the International Crisis Group, he's spent most of his career forging real paths to peace globally. From Sudan to Gaza, Myanmar to Ukraine - who can we rely on to stop "forever" wars and genocides?  Does Australia have a unique role to play? And what about the UN in its 80th year?...

Primatologist Jane Goodall once said: "It actually doesn't take much to be a difficult woman. That's why there are so many of us." She spoke up. For all the species who go unheard, or unnoticed by humans. She was a giant in the global environmental movement. She first walked into the wild forests of Tanzania as a young woman with no science training and embarked on what is now the longest-running...

AI is an incredible tool, but is AI also a new coloniser? Is there actually anything new or artificial about artificial intelligence? Join Natasha Mitchell at the 2025 Now or Never Festival to meet two big thinkers building a bridge between First Nations and Western knowledge to disrupt and reimagine the who, what, and why of AI? This conversation was recorded on 26 August 2025, in partnership wit...

Former US secretary of state Condoleezza Rice assesses the break-up of globalisation and the world order. The way in which countries such as the United States or Germany focus on sovereign goals is part of the problem. And that's likely not to stop any time soon. But she also comes up with practical ideas for creating a common economic and security future to address the issues that are too big for...