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Gresham College Podcasts

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Gresham College has been providing free public lectures since 1597, making us London's oldest higher education institution. This podcast offers our recorded lectures that are free to access from the Gresham College website, or our YouTube channel.
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Welcome to a brand new podcast by Gresham College called Any Further Questions? This is a podcast where we sit down with one of our speakers for an in-depth candid discussion on the lecture they just gave. Due to our strict 1 hour lecture time, we get tons of questions from our online and in-person audience that go unanswered. This is the place they are answered.
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Watch the Q&A session here: https://youtu.be/v0RoRG2YA-0 Why has automation anxiety – the fear that new technologies cause mass unemployment – proven wrong over the centuries? This lecture explores how technology affects the labour market. While new technologies can substitute for workers, reducing demand for their efforts at certain activities, th…
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Chemistry 221 L1 Video Lecture from November 10, 2025. This video covers material from Chapter 6 including formula mass and molar mass, how chemists find a molecular formula, percent composition, empirical formulas, using molar mass to convert empirical formulas to molecular formulas, and more. CH 221 website: http://mhchem.org/221 Let me know if y…
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How might we change the way we – and all our leaders think – so that we never go to war? The war between Russia and Ukraine, as well as the conflict in Gaza, have galvanised thinking about, and action by, the bodies administering, the laws of war. National court processes - applying ‘universal jurisdiction’ for example – may bring international war…
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Chemistry 221 L2 Video Lecture from November 6, 2025, Part 3 of 4. This video covers material from Chapter 6 including finding an empirical formula, the difference between an empirical formula and a molecular formula, finding a molecular formula using an empirical formula and the molar mass, and more. CH 221 website: http://mhchem.org/221 Let me kn…
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Chemistry 221 L2 Video Lecture from November 6, 2025, Part 4 of 4. This video covers material from Chapter 6 including solutions, morality, creating a solution from mass of solute, creating a solution using a concentrated solution (C1V1 = C2V2), other concentration types, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any q…
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Chemistry 221 L2 Video Lecture from November 6, 2025, Part 2 of 4. This video covers Part II of an Exam Review for the upcoming Midterm Exam II. This lecture also started the material for Chapter 6 including finding a formula in chemistry, methods for finding an empirical formula, and more. CH 221 website: http://mhchem.org/221 Let me know if you h…
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When – and how – did Athenian democracy begin? There is no unambiguous answer to this question. This lecture explores one plausible origin: the popular uprising in 508 BCE overthrowing foreign invaders (who had previously expelled an Athenian-bred family of tyrants). In the aftermath of that revolution, the Athenians – led by Kleisthenes – reorgani…
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Chemistry 221 L1 Video Lecture from October 31, 2025. This video covers material from Chapter 5 including building a molecular orbital diagram, bond order, bond order with respect to Lewis structures, magnetism, making ions in MO diagrams, shorthand notation, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Pea…
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This lecture is about the meaning of China and being Chinese. It examines critically how the Chinese state, under the control of the Communist Party defines them. It highlights the historical reality that the Chinese Mainland, Hong Kong and Taiwan adopted different political systems. The Communist Party installed a powerful Leninist party-state on …
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Chemistry 221 L2 Video Lecture from October 30, 2025, Part 3 of 3. This video covers material from Chapter 5 including magnetism in molecular orbital (MO) theory, short hand notation in MO theory, determining the number of sigma and pi bonds in MO theory and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!…
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Chemistry 221 L2 Video Lecture from October 30, 2025, Part 2 of 3. This video covers material from Chapter 5 including an introduction to molecular orbital theory, bonding and antibonding orbitals, the four principles of MO theory, bond order in MO Theory and in Lewis Structures, and more. CH 221 website: http://mhchem.org/221 Let me know if you ha…
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Chemistry 221 L2 Video Lecture from October 30, 2025, Part 1 of 3. This video covers material from Chapter 5 including an introduction to valence bond theory, orbital hybridization, sigma and pi bonds, the nature of a pi bond, hindered rotation around double bonds (relative to sigma bonds), and more. CH 221 website: http://mhchem.org/221 Let me kno…
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Watch the Q&A session here: https://youtu.be/3LrIEG26m78 War's environmental legacies disproportionately burden the civilian populations left behind. While research focuses on combatant exposures, civilians face chronic contamination from heavy metals, chemical residues, unexploded ordnance, and asbestos, often exacerbated by disrupted infrastructu…
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How is mathematical knowledge recorded and preserved across generations? Contrary to the idea that mathematics itself is somehow ‘permanent’, in this talk we will explore heritage-making in mathematics, that is the people, institutions, and material objects that can give mathematical ideas longevity. We will explore the heritage-making found in two…
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Chemistry 221 L2 Video Lecture from October 23, 2025, Part 3 of 3. This video covers material from Chapter 4 including VSEPR with trigonal bipyramid and octahedral structures, molecular polarity, how to determine if a molecule is polar or nonpolar and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!…
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Chemistry 221 L2 Video Lecture from October 23, 2025, Part 1 of 3. This video covers material from Chapter 4 including ionic and covalent bonding, Coulomb's Law, the Lewis structure, electronegativity, valence and core electrons, bonding and lone pairs, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!…
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The natural world faces unprecedented threats, challenging historical perceptions of nature as inexhaustible. Photographer Tim Flach draws on his acclaimed works, including Endangered, More Than Human, and Birds, to reveal how photography transcends traditional wildlife representation. By employing critical anthropomorphism and human portraiture te…
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Fear is one of the earliest emotions to have evolved. Most vertebrates – and possibly some invertebrates – show fear when they are threatened. At its most core, fear keeps us alive, helping us flee from predators or avoid dangerous environments. But why does this process sometimes backfire, leaving us paralysed by otherwise harmless phobias? And wh…
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Since 1945 Hitler and the Nazis have been the Western world’s one fixed moral reference point: the way we know what evil is. But that consensus has always been more fragile than it felt, and now it is unravelling. This lecture will trace how we came to build our values around the memory of the Second World War, why that consensus isn’t enough to de…
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