Science & Knowledge

Mark Litwintschik on big data, geospatial, and ML infrastructure. Benchmarks and tutorials.

Nick Maggiulli on data-driven personal finance. Evidence-based money decisions.

Adam Mastroianni on psychology research, academia, and human behavior. Former academic gone rogue.

Antarctic research station blog. What it's really like to work at the South Pole.

Hacker News for data science. Links about machine learning, statistics, data engineering.

Weather model charts. GFS, ECMWF, and ensemble forecasts.

Tropical weather analysis. Hurricane tracking and model data.

Real-time lightning strikes worldwide. Community-detected data.

Community weather stations. Hyperlocal forecasts from citizen scientists.

Cemetery records database. Millions of burial records with photos.

Free genealogy research. Billions of records from LDS archives.

Gathering for Open Science Hardware. Open tools for research.

Real-time sky events. Planet positions, conjunctions, and eclipses.

Free public domain map data. Vector and raster for cartographers.

Historical map collection. Over 100,000 high-resolution scans.

Ecological footprint data. Track humanity's demand on nature.

Interactive climate change atlas. Visualize projections by region.

Climate data platform. Emissions, commitments, and indicators visualized.

Sustainable solutions through historical technology. Challenging progress narratives.

Building a world of resilient communities. Energy, economy, environment.

Molecular gastronomy and food science. Technical cooking exploration.

Documenting and preserving endangered languages. Interactive map and resources.

Encyclopedia of writing systems and languages. Scripts, alphabets, and constructed languages.

Q&A for professional mathematicians. Research-level discussions.

Worldwide railway infrastructure map. Track layouts, signals, and stations.

Railroad photography database. Quality photos sorted by railroad and location.

Archive of the legendary zine review magazine. Thousands of zine reviews from the 80s-90s.

Directory of zine libraries worldwide. Physical collections preserving DIY publishing.

Community film development database. Recipes and times for any film/developer combo.

Bernie Krause's bioacoustics archive. Natural soundscapes and environmental audio.

Sound effects and field recording library. Professional quality audio.

Global sound map. Field recordings pinned to locations worldwide.

7-inch single database. Catalog and track 45 RPM releases.

Unused and cut video game content. Debug modes, regional differences, and hidden secrets.

Sega Master System and Game Gear preservation. Scans, translations, and homebrew.

ROM hacking community. Translations, hacks, and utilities for retro games.

Repository of interactive fiction. Games, interpreters, and development tools.

Interactive Fiction Database. Reviews and downloads for text adventures and parser games.

Tool-assisted speedrun archive. Frame-perfect runs pushing games to theoretical limits.

The speedrunning leaderboard. Records, rules, and community for thousands of games.

Restaurant Noma's fermentation lab. Innovations in koji, garum, and vinegar.

Jonathan Gagne's coffee science. Data-driven brewing research and experiments.

Peak database and climbing lists. Track summits and explore mountain statistics.

British caving database. Cave locations, surveys, and exploration records.

Educational cave photography and geology. Speleothem formations explained with images.

Classic urbex zine archive. Ninjalicious' writings on exploring hidden infrastructure.

Paul Stamets' mycology resource. Mushroom cultivation, research, and medicinal uses.

Biodiversity observation network. AI-assisted species identification and citizen science.

Michael Kuo's mushroom identification resource. Detailed species pages with microscopy and keys.

UK bird research and citizen science. Surveys, ringing data, and population monitoring.

Worldwide bird sound archive. Community-contributed recordings of over 10,000 species.

Cornell Lab's bird guide. Species accounts, sounds, and identification tips for North American birds.

Cornell Lab's bird observation database. Log sightings, explore hotspots, and contribute to science.

Encyclopedic wood species reference. Properties, workability, and identification for hundreds of species.

Dr. Larrin Thomas on knife metallurgy. Scientific analysis of steels, heat treatment, and edge retention.

Real-time solar and propagation data for hams. HF conditions, solar flux, and band condition widgets.

Real-time APRS tracking map. See amateur radio position reports, weather stations, and objects worldwide.

Database of radio signals. Identify unknown transmissions by their sound and waterfall pattern.

Real-time map of digital mode amateur radio signals. Watch FT8, WSPR, and other modes propagate globally.

Direct access to the scene.org demo file archive. Browse by year, party, or platform.

Commodore 64 Scene Database. Complete archive of C64 demos, cracks, and releases.

Archive of Amiga demoscene music. Tracker modules, musician profiles, and music disk collections.

Massive collection of tracker music modules. MOD, XM, S3M, IT files from the demoscene and beyond.

The demoscene's primary file archive. Decades of demos, intros, music, and graphics freely downloadable.

The world's largest open library. Search engine for shadow libraries, providing access to books, papers, and comics.

Jason Scott's archive of BBS-era text files. Thousands of documents from the pre-web internet preserved for posterity.

Adversarial journalism. Investigative reporting on national security, politics, and civil liberties.

Open source intelligence and investigative journalism. Pioneering OSINT techniques to uncover truth.

Data-driven investigative journalism on technology. Exposing how algorithms affect our lives.

Investigative journalism from The Center for Investigative Reporting. Deep dives into systemic issues.

NASA's portal for climate science. Vital signs of the planet, evidence, and visualizations.

Clear on climate. Science-based analysis of climate change and energy policy.

Archive of ANSI and ASCII art from the BBS scene. Thousands of artpacks preserved from the 80s and 90s.

Archive of the PC cracking and warez scene. NFO files, cracktros, and digital artifacts from underground computing.

Interactive explorations of complex systems. Emergence, chaos, networks - play with the math.

Curated list of data science resources. Learning paths, tools, and datasets.

Curated list of ML frameworks, libraries, and resources across multiple languages.

Real-time monitoring of forests worldwide. Track deforestation and forest fires globally.

Real-time visualization of electricity consumption and carbon intensity worldwide.

World's leading resource for climate solutions. 100 solutions to reverse global warming.

Free legal research from Free Law Project. Search millions of court opinions and oral arguments.

Track the U.S. Congress. Bills, votes, and congressional activity made accessible.

Track state legislation across all 50 U.S. states. Open data on state politics.

Follow the money in politics. Campaign finance and lobbying data made accessible.

Curated classic and contemporary cinema. The gold standard for film preservation and curation.

The Internet Movie Database. Comprehensive information on films, TV, and cast.

Webpage archiving service. Save snapshots of pages before they change or disappear.

Free education for anyone, anywhere. Math, science, computing, and more with personalized learning.

Interactive courses in math, science, and CS. Learn by solving problems, not watching videos.

Free MIT course materials. Lectures, notes, and assignments from real MIT classes.

NASA's daily astronomy image with expert explanation. Running since 1995, a treasure trove of space imagery.

Free online planetarium. View the night sky from anywhere on Earth at any time. Beautiful and educational.

Track satellites, ISS passes, and celestial events. Precise predictions for your location.

Open music encyclopedia. Community-maintained database of music metadata used by many apps.

3D shade map of the entire world. See shadows from mountains, buildings, and trees for any date and time.

3D scan of the interior of the Great Pyramid at Giza. Explore ancient architecture from your browser.

Books extracted from 40k Hacker News comments using deep learning. Discover what HN readers actually recommend.

Personal finance simulator. Model different scenarios for retirement, investments, and life decisions.

Collection of sentences and translations. User-contributed parallel corpus for language learning.

Interactive mathematics miscellany. Hundreds of puzzles, proofs, and explorations.

Science and math journalism. Accessible coverage of cutting-edge research.

Free audio archive. Live concerts, old radio, audiobooks, and podcasts.

3D visualization of our solar system, Earth, and NASA missions. Explore space from your browser.

Collaborative data visualization platform. JavaScript notebooks for exploring and sharing data insights.

Real-time visualization of global weather conditions. Hypnotic animation of wind, temperature, and more.

Beautiful weather forecasting. Detailed models, radar, and satellite imagery in an elegant interface.

Financial education and market data. Learn investing concepts and track markets.

Thousands of old programs, games, and operating systems playable in your browser. Computing history preserved.

Jim Leonard's retro computing resource. PC demos, vintage hardware documentation, and digital preservation.

Nathan Yau's data visualization blog. Tutorials, inspiration, and commentary on visualizing information.

Award-winning data visualization. Complex information made accessible through beautiful graphics.

Digital collections from the world's largest library. Photos, maps, recordings, and documents from American history.

Digital heritage from European museums, libraries, and archives. Millions of cultural artifacts online.

Explore art and history from institutions worldwide. Virtual museum tours and high-resolution artwork.

Cliff Stoll's Klein bottle business. Hand-blown mathematical glass objects and astronomer wisdom.

Research lab studying digital threats to civil society. Exposes government surveillance and spyware.

Backtest and analyze investment portfolios. Monte Carlo simulation and factor analysis.

Unbiased nutrition and supplement information. Evidence-based health research.

Solar activity and space weather. Aurora forecasts, meteor showers, and sun news.

Interactive planetarium and astronomy calendar. See what's visible tonight.

Physics tutorials and interactives. Clear explanations of physics concepts.

Interactive science simulations. Physics, chemistry, biology, and math.

Math and physics applets. Interactive simulations for learning.

Free MIT physics courses. From mechanics to quantum field theory.

Richard Feynman's legendary physics lectures. Free online edition.

Encyclopedic physics reference. Concept maps connecting physics topics.

Chemistry tutorials for students. Clear explanations of chemistry concepts.

Organic chemistry resources. Reactions, mechanisms, and synthesis.

Free archive of biomedical research. Millions of full-text articles.

Preprint server for biology. New research before peer review.

Preprint server for physics, math, and CS. Where new research appears first.

AI-powered research tool. Find and understand scientific papers.

Search scholarly literature. Papers, theses, and citations.

Free access to research papers. Controversial but used by millions.

Free access to books and papers. Shadow library for research and textbooks.

People-powered research. Help scientists with real research projects.

Protein folding game. Play to help scientists understand diseases.

Conversations with scientists and thinkers. Big questions, deep answers.

The original free ebook library. Over 70,000 public domain books, started in 1971.

Free public domain audiobooks read by volunteers. Thousands of classic books in audio format.

Encyclopedic collection of religious, mythological, and folkloric texts. World's religions and esoterica.

Free access to thousands of academic articles and books. Scholarly research without paywalls.

Archive of digital art from 1999 to present. Net art, software art, and born-digital works preserved.

Astronomical calculations and events. Eclipses, transits, and occultations.

Curated essays on public domain works. Rediscovering forgotten treasures.

Complete basketball statistics. Every player, every game, every stat.

Complete NFL statistics database. Historical and current stats.

Soccer/football statistics. Comprehensive data from leagues worldwide.

Open podcast database. Supporting an open podcasting ecosystem.

Tech compensation data. Compare salaries across companies and levels.

Portal to historical maps from libraries around the world. See how places looked centuries ago.

Exploring the history of computing. Online exhibits, timelines, and oral histories from tech pioneers.

Run Windows 3.1 in your browser. Complete with Program Manager, File Manager, and classic apps.

Browse 800+ billion web pages saved over time. See how any website looked years ago.

Retro gaming database. Information on classic games and consoles.

U.S. Environmental Protection Agency. Environmental data and regulations.

Threatened species database. Conservation status of species worldwide.

Conservation organization. Protecting nature and wildlife.

Computational knowledge engine. Ask it math, science, or data questions and get computed answers.

Comprehensive mathematics encyclopedia. Definitions, theorems, and explanations for every math concept.

Online Encyclopedia of Integer Sequences. Look up any sequence of numbers and find its mathematical meaning.

Tech reporting from outside the Western bubble. How technology shapes life in emerging markets.

Web collage of text and images excavated from GeoCities. A memorial to the early web's creative chaos.

Extensive essays on statistics, psychology, technology, and self-experiments. A masterclass in long-form web writing.

Digital library offering free access to books, movies, software, and the Wayback Machine for web history.

A solar-powered website about sustainable technology and historical alternatives. Goes offline when the sun doesn't shine.

Free, carefully formatted ebooks of public domain literature. Beautiful typography, meticulous proofreading.

Research and data to make progress against the world's largest problems. Free, open, accessible.

Visual essays that explain ideas through data and design. Journalism meets data visualization.

Machine learning research journal with interactive visualizations. Making ML concepts understandable.

Award-winning data visualizations on everything from science to pop culture.