HEATKEYS

GRASS GIS (Geographic Resources Analysis Support System) is an open source, free software (FOSS) Geographical Information System (GIS) with raster, topological vector, image processing, and visualization functionality

ESRI is the world leader in GIS (geographic information system) software and technology. This site features GIS mapping software, map Web services, online mapping and GIS training, demos, data, product and service information, support, user scripts, ...

Academia.edu helps academics follow the latest research.

Scientific Literature Digital Library incorporating autonomous citation indexing, awareness and tracking, citation context, related document retrieval, similar document identification, citation graph analysis, and query-sensitive document summaries. ...

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

YouTube is a place to discover, watch, upload and share videos.

The Natural Resources Conservation Service is the Federal agency that works in partnership with the American people to conserve and sustain natural resources on private lands.