Soil harbors one-quarter of all known biodiversity on earth and 80% of its biomass
The dark domain [soil] harbors a quarter of all known biodiversity on Earth, and a staggering 80 percent of its biomass."
Carolyn Lebel, “Living Soil: The lessons we can learn from France's fertile farmland,” UTNE Reader no. 175 (Jan-Feb 2013): 8.