Many health-conscious people already know that the nutrient value of foods has been dropping since the introduction of industrial agriculture. The causes include loss of nutrient-rich topsoil due to erosion brought on by frequent plowing and therefore loosening of the soil. Farmers also often fail to plant cover crops to hold soil in place when the growing season is over. Another cause is the reduction in the biological diversity and density of the soil brought on both by frequent plowing and by the constant barrage of synthetic chemicals, both…
