David talks to geneticist and science writer Adam Rutherford about the book that fundamentally altered our understanding of just about everything: Darwin’s On The Origin of Species (1859). What made the idea of natural selection so different from the theories of evolution that preceded it? How did Darwin arrive at it? What changed when he published his theory and why is it, in so many ways, the most revolutionary idea of them all?

Out tomorrow on PPF+ Darwin Part 2: Adam Rutherford explores how Darwin’s ideas evolved after 1859 and how the revolution in thinking that he started has continued to this day. To get this and all our bonus episodes plus ad-free listening sign up to PPF+ now https://www.ppfideas.com/join-ppf-plus

Next time: PPF Live recorded at the Regent Street Cinema: Network w/Helen Lewis

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Today’s revolutionary ideas come from China: David talks to historian Julia Lovell about the Taiping Revolution, another massive mid-19th-century upheaval that nearly overturned the established order. How did Christianity inspire an uprising against the Qing dynasty? Was it a revolution or a civil war? What was the Taiping Heavenly Kingdom? And where does this cataclysmic event fit into China’s 20th-century revolutionary history?

Out now: a bonus episode on 1848 with Chris Clark looking at the counter-revolution – how did the ruling regimes of Europe fight back? To get this and a year’s worth of bonus episodes sign up to PPF+ https://www.ppfideas.com/join-ppf-plus

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Next time: Darwin w/Adam Rutherford

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In our second of three episodes on the revolutions that swept through Europe in 1848 David and Chris Clark explore the forces demanding radical change. What was ‘the Social Question’ and who was asking it? Where did the violence that erupted in the summer of 1848 come from? What, if anything did it achieve? And who paid the price?

Out tomorrow: a final bonus episode on 1848 looking at the counter-revolution: how did the ruling regimes of Europe fight back? To get this and a year’s worth of bonus episodes sign up now to PPF+ https://www.ppfideas.com/join-ppf-plus

Next time: The Taiping Revolution w/Julia Lovell

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In the first of three episodes about the revolutions that swept through Europe in 1848 David is joined by historian Chris Clark to explore the ideas behind this continental upheaval. We start with the ‘Liberal Revolution’: Who were the liberals and what had turned them into revolutionaries? How did the original French Revolution overshadow their hopes and fears? Were parliaments and constitutions capable of sustaining revolutionary fervour? And did the liberals of 1848 realise what they had unleashed?

Come to see PPF Live at the Bath Curious Minds Festival: join us on Saturday March 29th to hear David in conversation with Robert Saunders about the legacy of Winston Churchill: The Politician with Nine Lives https://bit.ly/42GPp3X

Next time: 1848: The Radical Revolution w/Chris Clark

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Today’s revolutionary idea is something a bit different: David talks to statistician David Spiegelhalter about how an eighteenth-century theory of probability emerged from relative obscurity in the twentieth century to reconfigure our understanding of the relationship between past, present and future. What was Thomas Bayes’s original idea about doing probability in reverse: from effect to cause? What happened when this way of thinking passed through the vortex of the French Revolution? How has it come to lie behind recent innovations in political polling, AI, self-driving cars, medical research and so much more? Why does it remain controversial to this day?

The latest edition of our free fortnightly newsletter is available: to get it in your inbox sign up now https://www.ppfideas.com/newsletter 

Next time: 1848: The Liberal Revolution w/Chris Clark

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Today’s episode is about a very different revolution from any we’ve discussed so far: David talks to historian Hank Gonzalez about the Haitian Revolution, which for the first time in history saw a slave revolt result in an independent free state. How did the Haitian Revolution intersect with the American and French Revolutions that preceded it? Why were European powers unable to reverse it despite massive military intervention? What is its legacy for the state of Haiti today?

Tickets are still available for PPF Live at the Bath Curious Minds Festival: join us on Saturday 29th March to hear David in conversation with Robert Saunders about the legacy of Winston Churchill: The Politician with Nine Lives https://bit.ly/42GPp3X

Out tomorrow the latest edition of our free fortnightly newsletter: to get it in your inbox sign up now https://www.ppfideas.com/newsletters

Next time: The Bayesian revolution w/David Spiegelhalter

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For our third episode on the ideas behind the French Revolution, David talks to Richard Whatmore about the ubiquitous Thomas Paine, the Englishman who championed revolutionary politics around the world. How did Paine come to see France as the locus of all his revolutionary hopes? How were those hopes ultimately disappointed? And what happened to Paine’s vision of the Rights of Man?

Out now on PPF+: a special bonus episode on King Donald The First. David explores the arguments being made in 2025 for the restoration of monarchy in America. Who’s making them and why? What on earth are they thinking? Sign up now to get this and all our bonus episodes plus ad-free listening https://www.ppfideas.com/join-ppf-plus

Next time: Slave uprising: the Haitian Revolution

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For our second episode on the people and ideas behind the French Revolution David talks to historian and biographer Ruth Scurr about the man who came to embody the revolution in all its radicalism and all its terror: Maximilien Robespierre. Who was he and how did he rise so fast once the upheaval was underway? How did he harness the power of the Jacobin Club? How did he marshal the violence of the streets? What did he believe in? And what made him think it was possible to reconcile virtue with terror?

Out now: a special bonus episode for PPF+ subscribers on King Donald The First: David explores the arguments being made in 2025 for the restoration of monarchy in America. Who’s making them and why? What on earth are they thinking? Sign up now to get this and all our bonus episodes plus ad-free listening https://www.ppfideas.com/join-ppf-plus

Next time: French Revolution 3: Paine

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In the first of three episodes about the people and ideas behind the French Revolution, David talks to Lucia Rubinelli about the man who helped kickstart it all: the Abbé Sieyès. How did an obscure cleric galvanise a nation? What did he mean by the Third Estate and why did he think it was everything? What went wrong with his idea of a new constitutional order for France? And what happened when Sieyès encountered Napoleon?

Out now on PPF+: a special bonus episode on King Donald The First. David explores the arguments being made in 2025 for the restoration of monarchy in America. Who’s making them and why? What on earth are they thinking? Sign up now to get this and all our bonus episodes plus ad-free listening https://www.ppfideas.com/join-ppf-plus

Next time: French Revolution 2: Robespierre

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In the second of our two episodes about the American Revolution David talks to historian Eric Nelson about the ideas that shaped the US Constitution. Was the office of President a victory for the people who still wanted a king or for those who never wanted one again? What was old and what was new about the idea of the separation of powers? What really divided the Federalists and the Antifederalists? And how are these arguments still being played out in the early days of Trump 2.0?

Out tomorrow: a special bonus episode for PPF+ subscribers on King Donald The First: David explores the arguments being made in 2025 for the restoration of monarchy in America. Who’s making them and why? What on earth are they thinking? Sign up now to get this and all our bonus episodes plus ad-free listening https://www.ppfideas.com/join-ppf-plus

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Next time: French Revolution 1: Sieyes

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