The Keys to Soil Taxonomy, 13th edition, has been posted to USDA’s Natural Resources Conservation Service website. The Keys to Soil Taxonomy provides the taxonomic keys necessary for the ...

Were you aware that soil taxonomy even exists? I certainly wasn’t; so it was with considerable interest that I read about the subject at the Soil Orders site. There are, I learned, twelve soil orders ...

There’s more to dirt than just “sand” or “clay.” Soil taxonomy breaks down the layers, types, and quirks of the ground beneath our feet—and it’s weirder than you think. China executes 11 members of ...