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AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.
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Artificial Intelligence
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Supporting Victims of Domestic Violence
Know Thyself - The Value and Limits of Self-Knowledge: The Examined Life
Understanding Dementia
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Explores how Spinosaurus and Baryonyx lived, fed, and may have swum, using fossils and scientific analysis to reassess their ecology.
A mathematician explores how calculus, geometry, probability, diagrams, and networks reveal shortcuts for solving everyday problems.
A look at how astronomy, technology, economics, and international competition could shape humanity’s future in space.
A historical and mathematical journey through the search for a unified theory of everything, culminating in string theory and modern geometry.
Trace batteries from the voltaic pile to lithium-ion technology while examining how they work, their safety, energy density, cost, and durability.
Explore how hunting, domestication, hybridisation, conservation, and genetic engineering have enabled humans to reshape nature, from ancient DNA to de-extinction.
This lecture traces how William of Ockham’s principle of simplicity helped clear a path from medieval metaphysics to modern science.
A popular-science exploration of patterns—from cosmic background radiation and quantum behavior to DNA and symmetry—that reveal underlying rules of the universe.
Explores how plants sense, adapt, and use experience to survive, then draws lessons for human development, stewardship, and scientific communities.
Explores how to build trust and use evidence when talking with people who reject scientific expertise.
Examines evidence for dark matter and explores superfluid dark matter and modified gravity as explanations for cosmic observations.
Explores how ingenious technologies, from super-resolution microscopy to cell sorting, have transformed our understanding of human biology and disease.
A mathematician reveals how geometry illuminates problems in computing, information theory, probability, and democratic representation.
Explore how programmable and self-assembling materials can sense, adapt, and build structures inspired by biological behavior.
Explore how supermassive black holes form, grow through matter and non-merger processes, and influence stars, galaxies, and the solar system.
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