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Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

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.

Dhawal Shah Sep 03, 2026

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Yale University is an Ivy League research university located in New Haven, CT. Founded in 1701, it has produced leaders in many fields, from politics and business to science, medicine and the arts.

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The Ground Upon Which You Stand: Unmasking & Dismantling Impostor Syndrome
2 ratings

A radiology grand rounds talk on recognizing and dismantling impostor syndrome.
- YouTube
- 49 minutes
- Self-Paced
- Free Video
MRI in Lung Cancer - Current Status and Experience
2 ratings

A radiology grand rounds presentation on the current status and clinical experience of MRI in lung cancer.
- YouTube
- 35 minutes
- Self-Paced
- Free Video
Abdominal Anatomy on Computed Tomography
2 ratings

Learn to recognize abdominal anatomy as it appears on computed tomography images.
- YouTube
- 11 minutes
- Self-Paced
- Free Video
Scrotal Emergencies
2 ratings

A brief lecture on scrotal emergencies from a radiology faculty member.
- YouTube
- 14 minutes
- Self-Paced
- Free Video
The Psychology, Biology and Politics of Food - Lecture 19
2 ratings

Explore the intricate connections between psychology, biology, and politics in relation to food systems and consumption patterns.
- YouTube
- 1 hour 13 minutes
- Self-Paced
- Free Video
Capitalism: Success, Crisis, and Entrepreneurship in Business Information
2 ratings

Explore capitalism's successes, crises, and entrepreneurial aspects in modern business. Gain insights into economic systems and their impact on society and commerce.
- YouTube
- 49 minutes
- Self-Paced
- Free Video
Essentials of Global Health
2 ratings

Explore key findings from the Lancet Commission on Investing in Health and their implications for worldwide healthcare systems and policy development.
- YouTube
- 17 minutes
- Self-Paced
- Free Video
Introduction to Green Chemistry - Toxicology - Module 3
2 ratings

Discover toxicology fundamentals and molecular hazard basis to design safer chemicals with reduced environmental impact through green chemistry principles.
- YouTube
- 49 minutes
- Self-Paced
- Free Video
Biblical Law: The Three Legal Corpora of JE, P, and D - Lecture 10
2 ratings

A comparative reading of Israelite law reveals how divine authorship shapes its distinctive concern for the sanctity of human life.
- YouTube
- 51 minutes
- Self-Paced
- Free Video
Vikings and the European Prospect in 1000 CE - Lecture 22
2 ratings

Examines how Vikings raided, traded, settled, and connected regions across Europe and beyond during the ninth and tenth centuries.
- YouTube
- 49 minutes
- Self-Paced
- Free Video
Foundations of Psychology - Sigmund Freud's Theories and Contributions
2 ratings

An introductory lecture on Freud’s theories, psychoanalysis, its controversies, and the enduring role of the unconscious in psychology.
- YouTube
- 57 minutes
- Self-Paced
- Free Video
AIDS: Global Impact and Public Health Strategies - Lecture 1
2 ratings

Examines AIDS transmission, pandemic scale, epidemiology, societal effects, and locally adapted public health strategies.
- YouTube
- 51 minutes
- Self-Paced
- Free Video
Nineteenth-Century Cities - Urban Growth and Social Change in Europe and America
2 ratings

Examines nineteenth-century urbanization, immigration, class segregation, and competing visions of the European city through Paris and its center-periphery divide.
- YouTube
- 51 minutes
- Self-Paced
- Free Video
Biomolecular Engineering - Engineering of Immunity and Vaccine Development
2 ratings

Explores how bioengineering supports vaccine development through smallpox vaccination history and the threat of bioterrorism.
- YouTube
- 47 minutes
- Self-Paced
- Free Video
Bioimaging - X-Ray and CT Imaging Techniques - Lecture 20
2 ratings

An introduction to biomedical imaging through the physics, capabilities, limitations, and safety considerations of X-rays and computed tomography.
- YouTube
- 38 minutes
- Self-Paced
- Free Video

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