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24 topics, from particles to planets.
Featured datasets
Clean, documented, and free to download in any format.
Atmospheric CO₂ at Mauna Loa (Keeling Curve)
Monthly mean carbon dioxide concentration in the atmosphere measured at Mauna Loa Observatory, Hawaii, since March 1958, in parts per million. One row per month.
Countries of the world: key economic and social indicators
Every country with its region, income group and capital, plus the latest available value and year of 20 World Bank indicators from population and GDP to life expectancy, CO₂ per person and inequality. One row per country.
Countries of the world
Every present-day sovereign state with its ISO codes, capital, continent, area, population, official languages, currency, head of state and government, founding date, calling code, internet domain and flag. One row per country.
Earthquakes of magnitude 2.5+ in the past 30 days
Every earthquake of magnitude 2.5 or greater recorded worldwide by the U.S. Geological Survey in the last 30 days. One row per earthquake, with time, location, depth, magnitude and USGS alert information.
Confirmed exoplanets
Every confirmed planet outside the Solar System in the NASA Exoplanet Archive, with its host star, discovery details, orbit, size, mass and temperature. One row per planet.
Global surface temperature anomaly (NASA GISTEMP)
Global mean land-ocean surface temperature since 1880 from NASA's GISTEMP v4 analysis, expressed as the difference from the 1951–1980 average. One row per year, with the annual (January–December) mean plus each month and season.
Highest-grossing films of all time
Films that have earned at least US$500 million at the worldwide box office (not adjusted for inflation), with release year and director. One row per film.
Nobel Prize laureates
Every Nobel Prize and Prize in Economic Sciences awarded since 1901, with the laureate, motivation, prize share, birth details and affiliation at the time of the award. One row per prize awarded to a laureate.
Periodic table of the elements
All 118 chemical elements with atomic mass, electron configuration, electronegativity, melting and boiling points, density and year of discovery. One row per element.
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Every person, place, company and thing has a page — with sourced facts, charts and downloads.
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Q1299Every fact is one request away.
Download any dataset in nine formats. Query rows with filters over a clean REST API. Or connect your AI assistant over MCP and let it look things up itself — with sources attached.
- Bulk downloads, free foreverCSV, Excel, JSON, NDJSON, SQL, XML, Markdown and more. No sign-up.
- Query APIFilter, sort and page any dataset; fetch any entity. 500 free requests a day.
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- Sourced, alwaysEvery value carries its source and license, in the page and in the API.
curl "https://aidb.si/api/v1/datasets/tallest-buildings/rows\
?sort=-height_m&limit=5&format=csv"Know something we don't? Add it.
Anyone can add a fact, fix an error or submit a dataset. Every contribution needs a source, and AIDB's verifier checks it against that source before it goes live. Credit goes to you.
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