Click here to read this months Featured Article written by Gordon Weiss of the Global Mail on 5th Oct 2012.
It is estimated that the world produces one inch (2.54 cm) of topsoil every 500 years, and loses 2.54 cm every 1,000 years or so, to erosion. So until recently Mother Nature experienced a net soil gain of one inch per millennium.
However human activity, it seems, is now outstripping nature’s ability to replenish the earth’s thin skin. One estimate is that we are now losing 2.54 cm every 40 years or so.