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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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Intelligenza Artificiale
The Bible's Prehistory, Purpose, and Political Future
Education for All: Disability, Diversity and Inclusion
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XuetangX is an open online learning platform for Chinese students. It offers massive courses in multiple disciplines, with a mission to build an affordable, quality learning environment for everyone.
Graduate-level engineering course linking thermodynamic laws, exergy analysis, and finite-time processes with conduction, convection, radiation, and mass transfer.
Explore spacecraft orbital dynamics through real mission cases, progressing from two-body motion and orbital maneuvers to deep-space trajectories and three-body dynamics.
A comprehensive engineering mechanics foundation spanning rigid-body motion and the stress, deformation, and strength of structural members.
Advanced methods for modeling thermodynamic cycles, analyzing exergy, and calculating conduction, convection, radiation, and mass-transfer rates.
Learn to design measurement systems using sensors, signal conditioning, frequency-response analysis, Fourier transforms, and modern signal processing.
This course is to provide students with a clear and thorough presentation of both the theory and application of the mechanics of materials. Understanding is based on an explanation of the behavior of material under load and then modeling this behavior to…
Explore how chemical synthesis, bioorthogonal reactions, genetic code expansion, and AI-based protein design are used to manipulate biomolecules and build new biomedical technologies.
Explore carbon finance through carbon markets, climate policy, financial products, risk management, regulation, and global case studies.
Explore how engineering, economics, and management guide decarbonization pathways across power, steel, cement, buildings, transport, and cities.
Examines energy economics through China’s energy-security and green-transition strategies, combining market analysis, carbon mitigation, and policy-oriented case studies.
A systematic exploration of carbon emission reduction, from climate science and emissions accounting to technologies, policies, socioeconomic impacts, and regional management.
Covers quantitative and instrumental analytical chemistry, from titration and gravimetric methods to spectrophotometry, atomic spectrometry, chromatography, and statistical data evaluation.
A systematic introduction to linear algebra theory, methods, and applications through rigorous explanations, examples, and extensive exercises.
Can I become a software person? YES, you can! Everyone can become a software person. So, welcome to Software Engineering!
A close-reading course that turns students from popular readers into professional readers through critical study of five representative British novels.
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