About terra.pura

terra.pura helps farmers decide what is worth growing on their land. You draw your field, tell us about your energy, water, machinery and storage, and we combine NASA Earth-observation climate data with soil, weather and price data to rank crops by profit and risk, plan a year of rotations and estimate your farm's emissions. Built for the NASA Space Apps Challenge 2026.

Super Intelligence (SI) disclosure

The code for terra.pura was generated with Super Intelligence (SI): Claude by Anthropic, a code-generation tool. The terra.pura team created the original interface designs (homepage, onboarding and dashboard layouts, colours and typography), chose the challenge, data sources and features, and directed, reviewed and tested every step on a local server. SI was used to turn those designs into working pages and animations; write the crop growth simulation, economics model and data integrations (NASA POWER, ISRIC SoilGrids, Open-Meteo, OpenStreetMap, FAOSTAT, Octopus Energy, postcodes.io); generate the procedural 3D crop models; build the FAOSTAT price dataset; and write this page's metadata. All climate, soil, weather, map and price figures come from the cited data providers, not from SI.

How it works

Climate: 20+ year monthly normals for your field from NASA POWER (temperature, daily range, rainfall, solar radiation, root-zone soil wetness).
Soil: topsoil pH, organic carbon, nitrogen and cation exchange capacity from ISRIC SoilGrids 2.0, combined into a fertility score.
Weather: the next 16 days from Open-Meteo drive the start of every simulation.
Land: map, place search, and the buildings, roads and water on your land from OpenStreetMap (© OpenStreetMap contributors, ODbL).
Prices: farm-gate prices for raw crops in 145 countries from FAOSTAT (CC BY 4.0), converted with ExchangeRate-API.
Satellite & crop health: 30 m true-colour images (Harmonized Landsat Sentinel-2, NASA/USGS/ESA) and the MODIS Terra 16-day vegetation index (NDVI) from NASA GIBS; photo basemap from Esri World Imagery.
Hazards & soil moisture: wildfires, storms and floods near your land from NASA EONET; daily root-zone and topsoil wetness from NASA POWER.
Solar planner: sunlight on your field from NASA POWER.
Market: national production, imports and uses from FAOSTAT Food Balance Sheets (CC BY 4.0); bulk oil and meal prices from the World Bank Pink Sheet; supermarket chains near you from OpenStreetMap.
Energy providers: UK: live Octopus Energy regional rate and the Ofgem price cap, with your postcode from postcodes.io. US: the utilities whose service territory covers your land (DOE/PNNL), priced from EIA Form 861 (2025). France: EDF's regulated Tarif Bleu (CRE). Spain: yesterday's PVPC price from Red Eléctrica. Romania: each supplier's universal-service tariff for your distribution zone, from ANRE's price comparator (POSF). 68 countries have a supplier directory; where a supplier's price isn't published we ask for the rate on your bill. Eurostat national averages are shown for reference only.
Water & sewerage: UK companies by postcode area (Ofwat regions); US public water systems from the EPA service-area map; a directory of regional and national operators for 100+ countries, plus operators mapped in OpenStreetMap.
Provider logos: official logos from Wikidata and Wikimedia Commons, or the company website's icon.
Model: a daily crop simulation (growing degree-days, FAO-56 soil water balance, frost, heat, drought, waterlogging and pH stress) run over many simulated weather years, then costed with your providers, wages, machinery fuel (UK DESNZ emission factors) and storage.

Everything you enter stays in your own browser (local storage) unless you choose to save a farm to an optional account. No ads or trackers; see the privacy policy. Estimates are for comparison and learning, not professional farm advice.

For network administrators

terra.pura is a free educational science site with no logins, ads, trackers, downloads or user uploads. If your web filter blocks it, please allow the site and the open-data services it calls from the visitor's browser:

terrapura.sorila.dev · the site
power.larc.nasa.gov · NASA climate
rest.isric.org · soil
api.open-meteo.com · weather
tile.openstreetmap.org · map tiles
nominatim.openstreetmap.org · place search
overpass-api.de · map features
maps.mail.ru · map features mirror
overpass.private.coffee · map features mirror
open.er-api.com · exchange rates
api.postcodes.io · UK postcodes
api.octopus.energy · UK energy prices
eonet.gsfc.nasa.gov · NASA hazard alerts
www.google.com · US utility website icons
eedgis.pnnl.gov · US electric utilities
services.arcgis.com · US water systems (EPA)
gibs.earthdata.nasa.gov · NASA satellite imagery & greenness
server.arcgisonline.com · satellite photo basemap
apidatos.ree.es · Spanish electricity prices
www.wikidata.org · provider logo lookup
commons.wikimedia.org · provider logo images

Suggested category: Education or Science & Technology. Site owners and admins can request this classification from the major filter vendors: Cisco Talos · Palo Alto Networks · Fortinet FortiGuard · Zscaler · Broadcom (Blue Coat) Site Review · Forcepoint · BrightCloud (Webroot). School filters such as Lightspeed, GoGuardian, Securly and Smoothwall take requests through the school's own admin console.

Credits

Photos: homepage photo by Polina Kuzovkova on Unsplash; loading-screen photo by Chris Ensminger on Unsplash.
NASA: POWER (climate, sunlight, soil wetness), GIBS / EOSDIS imagery (HLS from NASA, USGS Landsat and ESA Copernicus Sentinel-2; MODIS Terra NDVI), EONET (natural hazards).
Maps & places: © OpenStreetMap contributors (ODbL), via Nominatim and Overpass; satellite photo basemap © Esri, Maxar, Earthstar Geographics.
Soil & weather: ISRIC SoilGrids 2.0 (CC BY 4.0); Open-Meteo (CC BY 4.0).
Prices & markets: FAOSTAT (CC BY 4.0); World Bank Commodity Price Data (CC BY 4.0); ExchangeRate-API; Eurostat; US EIA; DOE/PNNL; US EPA; Octopus Energy; postcodes.io; Red Eléctrica; CRE; ANRE.
Libraries: Leaflet (BSD-2) and three.js (MIT), served from this site.
Logos: energy, water and sewerage company logos belong to their owners and are shown only to identify providers; sourced via Wikidata and Wikimedia Commons.