In our Island Universe this earth is small. But in each backyard, on each acre or square mile of earth, decisions may be made or are being made that determine survival, utility, order, beauty. The results of those decisions appear constantly in the life all about us.
We have all been in homes where neatness, usefulness and good taste abound. We have been in villages and towns where the same conditions prevailed. On the other hand, we have been in situations that can be described only by the words littered, disorderly, chaotic. We have also seen neat orderly homes in disorderly, slovenly neighborhoods. Much depends upon who makes the decisions and whether the plans that are carried into effect promote or obstruct the ultimate purpose.
At the moment, we have the satisfaction of orderly, beautiful neighborhoods at the same time that we are surrounded by a disorderly, littered, chaotic international battleground.
The earth with its oceans and its atmosphere is a storehouse containing many if not most of the essentials for survival, growth and development, for mankind as well as a multitude of other life forms. Perhaps its most valuable single asset from the human viewpoint is its topsoil. Topsoil plus light, air and moisture provide the elements necessary for producing vegetation. Vegetation, in its turn, furnishes the nourishment on which animals thrive.
At the top of our priority list for the well-being of the earth stands the injunction: conserve and build topsoil.
Topsoil is lost through erosion--wind erosion, water erosion, erosion through over cropping. It is held in place by stones, grasses, and the roots of shrubs and trees. Untouched by human hands, on the prairies and in the forests, topsoil is deepened year by year as winter frosts break up soft rocks, as dead grasses, leaves, twigs break down into humus, to become part of the topsoil and provide the nourishment for a new round of vegetation.
Topsoil is renewable, replaceable. Lost through cropping and erosion, it may be rebuilt and deepened by natural processes. In temperate climates with normal rain and snowfall, the topsoil of grasslands or a forest may be deepened year by year and century by century. Topsoil may also be deepened by dust storms that pick up particles of humus from dry lands and carry them to moister areas.