Tomorrow, September 15th, 2016 is the last day to enter the American Society of Agronomy/Crop Science Society of America/Soil Science Society of America (SSSA) 2016 Photo Contest. The theme for SSSA's contest is "Soils Sustain Life." Let us know if you're the lucky winner!
The U.S. Geological Survey provides geochemical and mineralogical maps for the conterminous United States, based on sampling data with a spatial resolution of 1 sample per 1,600 square km, for a total of 4857 sites across the country. The resulting interactive maps allow users to see regional variations in soil chemistry at different depths in the soil.