EXPeditions - The living library of knowlegde

The EXPeditions podcasts take you into the worlds of leading thinkers, scholars and scientists. Lively, accessible, reliable, these audio journeys guide you through key terrain in science and society, history, art and all the humanities.

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Episodes

Thursday Jun 12, 2025

We have 1°C of global warming, but what does that entail? The answer is that the likelihood and intensity of extreme weather events are changing.
About Friederike Otto
"I’m Senior Lecturer in Climate Science at the Grantham Institute for Climate Change and the Environment, Imperial College London and Honorary Research Associate of the Environmental Change Institute, University of Oxford.
I work on answering the question of whether and to what extent human-induced climate change alters the likelihood and intensity of extreme weather events and, in particular, how these changes and extreme events affect people across the world."
Current manifestations of climate change
The way climate change manifests is not through global mean temperature, as is usually assumed: average global temperature is just an indicator of climate change. We have 1°C of global warming, but what does that entail? The answer is that the likelihood and intensity of extreme weather events are changing.
The reason for that is twofold. On the one hand, there is the thermodynamic effect, which means that we have more greenhouse gases in the atmosphere because of the burning of fossil fuels. Because of these gases, the atmosphere overall gets warmer – which is currently the 1°C we’ve measured in global warming. A warmer atmosphere means that, on average, you have a higher likelihood of heatwaves occurring and a lower likelihood of cold waves occurring. At the same time, with a warmer climate, the atmosphere can hold more water vapour, which will be released back to Earth in the form of rain. As a consequence, in a warmer climate you have more extreme rainfall.
This warming effect works in combination with a second effect known as the dynamic effect. In a nutshell, because we have changed the composition of the atmosphere through greenhouse gases and more water vapour, we have also changed how the atmospheric circulation behaves. This means we’ve changed how weather systems move and where they develop.
Key Points
• The way climate change manifests is not through global mean temperature but through an increase in the frequence and the intensity of extreme weather events.• The change in extreme weather events is a combination of two effects: the thermodynamic effect (more greenhouse gases in the atmosphere) and the dynamic effect (change in the atmospheric circulation).• By burning fossil fuels, we have changed the composition of the atmosphere through greenhouse gases and more water vapour and also changed how the atmospheric circulation behaves. This means we’ve changed how weather systems move and where they develop.• These effects can be very different depending on the part of the world where they take place and the season we’re in. These two effects would either cancel each other or both effects could work in the same direction.• While on the global scale we can say we have more heatwaves and more extreme rainfall, whether that matters very much depends on what kind of extreme events the community is vulnerable to.

Monday Jun 09, 2025

As far as Lawrence’s reputation was concerned, the trial of Lady Chatterley’s Lover rightly established him as a crucial figure in shaping modern attitudes to sex.
About Lara Feigel
"I am Professor of Modern Literature and Culture at King’s College London.
I am the author of four works of cultural history in which I explore the relationship between works of literature, the times they’re written in, the impact of history on the books and the lives of the creators of the books, and how both the life shapes the work and the work shapes the life."
D.H. Lawrence, the ostracised figure
While Lawrence was alive, he provoked extremely strong reactions amongst women readers, both women he knew and women who read him. This has carried on, for more than almost any other male writer, right through the decades until today.
Just after Lawrence’s death came one of the first books about him, a study by Anaïs Nin, who said it was the first time that a man had so wholly and completely expressed women accurately – a huge thing to say. Quite soon after the backlash began, we got Simone de Beauvoir, in The Second Sex, rather movingly describing her distress at realising that she fell for what she called Lawrence’s “cosmic optimism”. She had rather loved some of what seemed to her, initially, like mutual encounters between men and women. She then decided that Lawrence passionately believed in male supremacy. You can really feel the disappointment in her writing as she comes to that conclusion.
De Beauvoir was followed by more certain pronouncements of Kate Millett in her 1970 book Sexual Politics, where she castigated Lawrence for what she calls his personal cult, ‘The Mystery of the Phallus’. In the wake of Millett’s book, Lawrence is torn from university syllabuses. It was increasingly hard for women to admire Lawrence. He became someone to be ashamed of liking, although he himself would disapprove of us feeling ashamed of anything. He became quite an ostracised figure.
Key Points
• D.H. Lawrence evoked strong opposing reactions from women who read his works. Part of what makes women respond so intensely to Lawrence is his modern female characters, some of whom were inspired by his wife, Frieda.• Lawrence saw the unconscious as a bodily organ that hadn’t had enough free play, and he thought that we became too driven by our will rather than by an ease and instinct. Sex was only one aspect of that.• As far as Lawrence’s reputation was concerned, the trial of Lady Chatterley’s Lover rightly established him as a crucial figure in shaping modern attitudes to sex.

Monday Jun 09, 2025

Although some scientists believe that nurture overrides biologically determined sex differences, the distinction between nature and nurture is not clear.
About Irene Miguel-Aliaga
"I am Professor of Genetics and Physiology at Imperial College London. I study how our internal organs change and affect us.
I am a geneticist and I run the Miguel-Aliaga Laboratory at the Institute of Clinical Sciences at Imperial. My team and I research organ plasticity: how and why organs that we commonly regard as fully-developed change in size or function, in response to environmental or internal challenges, mainly focusing on intestines and their neurons."
Sex differences are widespread
Wherever we look in animals – and these may be insects, or mammals, or humans – there are widespread sex differences that extend beyond what we may initially consider. In mammals, most of the research on sex differences has concerned reproductive systems, anatomical differences and, to some extent, differences in the brain. This is very controversial research, when people look at human male and female brains. Looking beyond those places, we find evidence for sex differences pretty much everywhere on multiple levels. For example, the kind of genes a cell expresses: whether it’s the cells in our intestinal lining, liver cells or nerve cells, they will all express different genes in males and females.
Key Points
• Sex differences include the genes a cell expresses; there are male guts and female guts.• Although some scientists believe that nurture overrides biologically determined sex differences, the distinction between nature and nurture is not clear.• Diversity in traits is usually desirable because different traits are useful in different environments.

Monday Jun 09, 2025

Feminists have long theorised about how to consider evidence and women’s testimony as factual. The question of evidence in cases of sexual violence has been critical to feminist organising for the last 50 years.
About Durba Mitra
"I’m the Richard B. Wolf Associate Professor of Women, Gender and Sexuality at Harvard University.
I am a scholar of the history of sexuality and epistemology in South Asia and the comparative colonial and post-colonial world."
Questions of evidence and testimonyFeminists have long theorised about how to consider evidence and women’s testimony as factual. In South Asia, the question of evidence in cases of sexual violence has been critical to feminist organising for the last 50 years. The rape law was passed under colonialism as part of the Indian penal code in the 1860s, and medical evidence takes precedence over a woman’s own testimony about what happened. Particularly in the context of colonial India and post-colonial South Asia, including Pakistan, India and Bangladesh, we see the rise of the question of evidence of women’s virginity in sexual violence cases, where a woman’s virginity becomes critical for the determination of whether a woman has been raped or not.
Feminists have been organising around these issues for decades. In the 1970s, the case of an extraordinarily violent gang rape goes all the way up to the Indian Supreme Court. In this case, the Mathura rape case, a girl is gang-raped by the police. The Indian Supreme Court determines that she had been so-called “habituated” to sexual intercourse. In other words, she was accustomed to sex and therefore had not, in fact, been gang-raped. From that moment, we see the galvanising of an extraordinary feminist movement which tries to transform the concept of evidence itself.
Key Points
• The history of collecting medical evidence in rape cases reveals how ideas about women’s sexual propriety are linked to ideas about sexual violence.• One of the biggest challenges of feminist mobilisation is translating critique into structural change.• Feminism offers the tools to re-imagine a more just future.

Monday Jun 09, 2025

Many female comics are undermining misogynistic discourse simply by echoing its lines, using humour to reveal the unfunny side of sexist jokes.
About Devorah Baum
"I'm an Associate Professor in English Literature and Critical Theory at the University of Southampton.
I research literature, philosophy, psychoanalysis and religion, and I've laid a particular emphasis in recent years on feelings and their role in our lives, and on jokes. And I'm currently writing a book on marriage."
Expressing our smuttier thoughts
One of the liberating thrills of stand-up is watching someone uninhibited by social mores, because comics love nothing better than speaking about rude or censored things like shit, sex and obscenity. For Freud, the reason we joke is partly because we need somewhere to express our smuttier thoughts. We crave places where the lewd ideas we’re walking around with, consciously or not, can come out. This need, Freud believed, was as vital to us as the need for sexual discharge itself, which is an extraordinary, remarkable idea when you think about it.
In his book on jokes, Freud divides jokes into two main varieties, the innocent and the tendentious. Tendentious jokes always have a victim, and sexual jokes are of this variety. Freud defined smut as the intentional bringing into prominence of sexual acts and relations made by speech. What motivates the comedian is the desire to see what is sexual as not hidden, but exposed. For that to happen, three people are required: the teller of the joke, the object of the joke’s sexual aggressiveness and the hearer of the joke, in whom the joke’s aim of producing pleasure is fulfilled.
Key Points
• According to Freud, we joke because we need to express our smuttier thoughts. Jokes are either innocent or tendentious; the latter always have a victim.• Freud says that a man who laughs at smut is laughing as though he’s the spectator of an act of sexual aggression. Similarly, a politician who denounces political correctness and makes lewd jokes, for example, appears to offer supporters a kind of libidinal• Many female comics are undermining misogynistic discourse simply by echoing its lines, using humour to reveal the unfunny side of sexist jokes.

Monday Jun 09, 2025

The Second Sex was written in 18 months, an incredibly short period of time, and the story of its genesis is the stuff of legend.
About Kate Kirkpatrick
"I’m the Tutorial Fellow in Philosophy and Christian Ethics at Regent's Park College, Oxford.
My research focuses primarily on Jean-Paul Sartre and Simone de Beauvoir, and I've written a few books on Sartre and Beauvoir and Existentialism more generally."
The genesis of The Second Sex
The Second Sex was written in 18 months, an incredibly short period of time, and the story of its genesis is the stuff of legend. In one of her memoirs, she claims that she was having a conversation with Sartre; they were discussing what she should write about next, and the question of what it had meant to her to be a woman came up. One sometimes reads in the literature about Existentialism that Sartre gave Beauvoir the idea for The Second Sex, but this is far too simplistic.
In French literary studies, Existentialism is sometimes defined as a literary period rather than a philosophical one, and it includes works like Michel Leiris’ Manhood. Beauvoir read that book and thought that she’d like to write a similar one about what it means to become a woman. So, the conversation with Sartre was certainly part of the story of the genesis of The Second Sex, but Beauvoir’s wider reading was also extremely important. I like to think of The Second Sex as a work which was polygenetic, that had many different sources of inspiration, including Beauvoir’s reading, her conversations with her contemporaries, her experiences as a woman and the experiences of her friends. If we look at it in this way, it emerges as a much more complicated work.
Key Points
• The Second Sex is thought to have had many different sources of inspiration, including Beauvoir’s reading, her conversations with her contemporaries, her experiences as a woman and the experiences of her friends.• The Second Sex was published in two volumes. In the first volume, she’s interested in the questions ‘What is a woman?’ and ‘What does it mean to be feminine?’• The second volume caused a scandal. She makes the claim that one is not born, but rather becomes a woman.

Monday Jun 09, 2025

The History of Sexuality was a major undertaking that Michel Foucault began, in the most obvious way, in the mid-1970s.
About Stuart Elden
"I’m a Professor of Political Theory and Geography at the University of Warwick.
I’m the author of books on Henri Lefebvre, Martin Heidegger and the question of territory. Over the past several years, I've been writing a multivolume intellectual history of the entire career of Michel Foucault."
The History of Sexuality
One of the major contributions that Foucault makes in his career is to work on the question of sexuality. Foucault was a gay man, who struggled with the question of his own sexuality at the beginning of his life, but later became much more reconciled to it and much more public about these kinds of questions.
The History of Sexuality was a major undertaking that Foucault began, in the most obvious way, in the mid-1970s. You can see elements of this in his lectures in the 1960s, but in the mid-1970s, in his Collège de France lecture courses and in some of his visiting lectures elsewhere, he says that he’s taken on a kind of project that’s like a sequel to his History of Madness, and this is The History of Sexuality.
Key Points
• The `History of Sexuality` was a major undertaking that Foucault began in the mid-1970s.• Foucault thinks that the Christian notion of the flesh shapes the beginning of the current era.• We need to take into account medicine, biology, psychology and theology if we are to understand how sexuality is organised, ordered, controlled and regulated.

Monday Jun 09, 2025

University students are changing how they regard sexual culture. Many feel conflicted about sexual experiences, which they see as potentially traumatising.
About Laura Kipnis
"I’m Professor emerita at Northwestern University, where I taught film.
I would call myself a cultural critic. I mostly write about cultural politics, sexual politics, aesthetics. I’m very interested in norms and their violation, transgression, people who get in trouble. I’m also interested in taboos and people who smash norms. So I like troublemakers, I guess."
A lighthearted essay
I was asked to write an essay about campus sexual politics, and I had no idea what a minefield I was entering. I wrote this ironic, lighthearted article. The article covered the policy prohibiting professor and student romantic relationships that was enacted on my own campus.
This policy came out of the blue. I compared it to my college experience where many students slept with their teachers, and nobody seemed to suffer too much. In this light, I wrote this essay, and it became incredibly controversial in ways I hadn’t anticipated.
Key Points
• University students are changing how they regard sexual culture. Many feel conflicted about sexual experiences, which they see as potentially traumatising.• Changing attitudes and incidents surrounding alcohol are leading to “sexual paranoia” on campuses. The growing bureaucracy surrounding Title IX may also incentivise accusations and prosecutions.• This culture is due to the rise of governance feminism, which originated from the anti-pornography movement. Governance feminism is largely paternalistic.

Monday Jun 09, 2025

In antiquity, the sexual object is rarely a defining characteristic: how you sleep with someone is as important as who you sleep with.
About Simon Goldhill
"I'm Professor of Greek Literature at the University of Cambridge.
My research areas are in Greek literature and culture of all periods and also in Victorian Britain, the history of sexuality and the history of culture."
Sexual interaction in Greek culture
One of the most remarkable elements in Greek culture, for so many people over the centuries, has been the picture of particularly 5th century BCE classical Athens, where the dynamics of sexual interaction between genders was simply radically other from what modern Western society and its deep roots in both Christianity and Judaism have come to expect. This concern, this surprise, is focused, in particular, on male desire for men. Consequently, Greece has become one of the ways in which Western society conceptualises its own relation to what we will now call homosexuality. I say “we will now call homosexuality” because that’s a word that’s only been around since the latter half of the 19th century and was only really in popular culture from the 1920s onwards.
It’s really important to remember that one of the fundamental distinctions that we learn by looking at other cultures is that the idea of having a sexuality – that is to say, a pathology, something that defines you according to your sexual object – is a very modern and quite culturally bound idea. One of the things we might learn from Greece is simply that. We could learn it from other places, too – and I’ll come back to why Greece is important – but we can learn from looking at other cultures that what we take to be natural or inevitable is profoundly cultural and therefore open to change.
Key Points
• Studying ancient Greece helps us rethink our understanding of desire, the body and gender.• In antiquity, the sexual object is rarely a defining characteristic: how you sleep with someone is as important as who you sleep with.• Many feminist thinkers have used Ancient Greece to explore gender.

Friday Jun 06, 2025

Women’s leadership and feminist political organising have been critical to all kinds of political movements. This is particularly true in relation to minority rights.
About Durba Mitra
"I’m the Richard B. Wolf Associate Professor of Women, Gender and Sexuality at Harvard University.
I am a scholar of the history of sexuality and epistemology in South Asia and the comparative colonial and post-colonial world."
Feminist political organising and minority rights
Women’s leadership and feminist political organising have been critical to all kinds of political movements. This is particularly true in relation to minority rights. In the United States, with the contemporary Movement for Black Lives, Black feminists have been essential to the way feminists have organised and the way the political movement has re-emerged with strength in 2020. Black feminists were the origins of that political movement. We can also think of the #MeToo movement and women like Tarana Burke, a Black feminist organiser and activist scholar who has done extensive work around Black women and girls and the problem of endemic sexual violence in Black communities.
In South Asia, we can see this in political movements that help us articulate a politics of citizenship for our contemporary world in the face of a rising authoritarianism. This context has emerged as a result of the rise of the BJP, a Hindu right-wing political party that has been in power since 2014 and has led to the persecution and massive amounts of violence against Muslim minorities and other minority subjects in India today. We see the rise of this extraordinary fascist imagination, of the exclusion and the extermination of many kinds of people in the South Asian landscape.
In the space of this rise of authoritarianism, feminist thinking has helped us consider how we can organise for minority rights. In contemporary India, states have created the possibility of the minoritisation and the extermination of certain kinds of people. It’s the rise of anti-Muslimness, which has become more virulent and more violent than ever, especially in the last few years.
Key Points
• Women’s leadership has been critical to political movements, particularly in relation to minority rights.• The Shaheen Bagh protests are an example of women reclaiming public space and leading a broad political movement, beyond women’s issues.• Environmentalism is tied to the rise of feminist thought.

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