General knowledge
Courses, books, research and study tools for learning something new.
- Aeon, Editor's pickLong-form essays on philosophy, science, psychology, society, and culture.
- Art for Kids HubStep-by-step drawing and art lessons for children and families.
- Arts & Letters DailyA daily curated selection of essays, reviews and articles on philosophy, literature, history, art and ideas, from The Chronicle of Higher Education.
- Big ThinkIdeas, interviews, and educational content covering science, society, and culture.
- Britannica KidsChild-focused encyclopedia and reference material.
- Crash CourseFast-paced educational videos spanning science, history, humanities, and more.
- Data CommonsExplore interconnected public datasets about places, populations, economics, and more.
- DK Find Out!Visual educational reference covering science, history, nature, and general knowledge.
- DuckstersStudent-friendly explanations and reference material across school subjects.
- Farnam StreetShane Parrish's site of articles, a weekly newsletter and a podcast on mental models, decision-making and clear thinking.
- Gapminder ToolsExplore global development data through interactive visualizations.
- GeekNewsA Korean-language technology and startup news community with discussions, shared links and a Show section for projects.
- Gus on the GoLanguage-learning resources and apps designed for younger children.
- Hacker News, Editor's pickA technology and startup news community with reader discussions, project showcases and Show HN submissions.
- Information Is BeautifulExplore data visualizations that make complex topics easier to understand.
- Internet Encyclopedia of PhilosophyPeer-reviewed reference articles on philosophers and philosophical topics.
- Internet Live StatsExplore estimates of internet activity and usage through live-style counters.
- Learn AnythingExplore visual learning paths.
- NASA YouTubeNASA videos, launches, space coverage, educational content, and archives.
- National Geographic KidsNature, science, geography, animals, and exploration content for children.
- NautilusLong-form stories exploring science, philosophy, and culture.
- Pascal ArchitectureIllustrated explanations and interactive 3D models of buildings, structural systems and construction techniques.
- PhilosophizeIntroductory philosophy resources.
- Psyche, Editor's pickA free digital magazine of essays, guides and videos on psychology, emotions, mental health, relationships and living well, published by Aeon.
- Quanta MagazineIn-depth journalism on mathematics, physics, biology, and computer science.
- ScienceDailyBrowse science news and research summaries across many disciplines.
- SketchRxDrawing practice and visual-art exercises.
- SlashdotA technology-news and discussion site covering software, open source, science and related topics.
- Stanford Encyclopedia of PhilosophyScholarly reference articles covering philosophy and related fields.
- Tate KidsArt activities, games, and artist resources for children.
- TED TalksTalks and explanations from researchers, experts, creators, and practitioners.
- The PuddingExplore visual essays and stories told through data and interactive graphics.
- WonderopolisDaily curiosity-driven questions and explanations for children and families.
- World Population ReviewExplore population statistics and country-level data.
- WorldometerExplore continuously updated global statistics and counters.
- Your Bias IsA free illustrated guide to 24 common cognitive biases, with plain explanations and printable Creative Commons cards and posters.
- Your Logical Fallacy IsA free illustrated guide to common logical fallacies, explaining each flaw in reasoning with examples, plus printable Creative Commons cards and posters.