For two decades, students walked past an unassuming beige rock on their way to and from class—and occasionally stuck wads of ...

We'll also teach you how to amend the soil you have so you can grow the plants you want. Depending on where you live, you're ...

Silt-size particles are especially susceptible to wind deflation-they lack the electrostatic charge and affinity for water that make clay-size particles stick to the surface, have less mass ...

Soils are composed of a mixture of sand, silt, clay and organic matter. Both the clay and organic matter particles have a net negative charge. Thus, these negatively-charged soil particles will ...