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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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The Science of Gastronomy
Supporting Victims of Domestic Violence
Astronomy: Exploring Time and Space
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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.
Comprehensive training in standardized DR, CT, DSA, and MRI examination techniques, combining imaging principles, equipment, and clinical procedures.
Survey pediatric internal medicine through age-specific diagnosis and treatment of diseases across neonatal, respiratory, cardiac, hematologic, renal, neurologic, immune, endocrine, and gastrointestinal systems.
Study how natural medicinal compounds are extracted, isolated, identified, and developed into drugs, with examples from Chinese herbal and marine medicines.
A systematic introduction to coral reefs, from formation and ecosystem dynamics to environmental records, geomorphic change, conservation, and ecological restoration.
An accessible exploration of contemporary China through social transformation, cultural heritage, economic development, technological innovation, environmental progress, and global engagement.
Combines graphic, color, three-dimensional, perspective, and light-and-shadow principles to develop functional visual designs.
A 2025 dialogue examining online education.
以主题单元融合听说读写译训练与文化素养培养,提升大学生的英语综合运用和跨文化沟通能力。
Learn mathematical models for steady, transient, multiphase, and waterflood flow in oil and gas reservoirs.
Introduces reservoir physics and displacement mechanisms alongside chemical, gas, thermal, microbial, and nanomaterial technologies for enhanced oil recovery.
Explore how civil aviation can cut emissions through low-emission technologies, sustainable fuels, operational efficiency, carbon pricing, and environmental governance.
Learn to identify and control chemical-process hazards through fire and explosion prevention, thermal reactivity analysis, risk assessment, and emergency management.
Introduces enhanced oil recovery through reservoir properties, two-phase displacement dynamics, and chemical, gas, thermal, microbial, and nanomaterial flooding technologies.
Model steady, transient, multiphase, and waterflood flow in porous oil and gas reservoirs using Darcy’s law and mathematical methods.
Learn municipal pipeline construction, installation, inspection, maintenance, and repair across water, drainage, heating, gas, and fire protection systems.
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