Drought is projected to affect 75% of the world's population by 2050. Take that in. ‘Drylands’ now make up nearly half of all ...

It is less nutrient-rich than topsoil, and is generally lighter in color ... soil is actually the most biodiverse habitat on the planet, being home to over half of the species on Earth.

A worm burrows its way through the dark earth, ingesting particles of soil and expelling nutrient-rich casts in a constant forage for food. Charles Darwin described earthworms as one of the most ...

Brown earth soils are widespread in Britain, except in highland areas. Soil organisms, like earthworms, mix the materials together, merging the boundaries between the horizons. These soils are ...

a product that often gives carbon-rich soils their characteristic dark color (Fig. 2). These various forms of SOC differ in their recalcitrance, or resistance to decomposition. Humus is highly ...

Amundson’s introduction to soil biogeochemistry provides an exciting path for future students with a wide range of interests, especially ecological and Earth science students. This introduction to the ...