Secrets of the Soil

Explores scientific and mystical developments that renew and enhance the soil, among them rock dust fertilizer, biodynamic agriculture, and other highly unusual fertilizers.

Peter Tompkins was an American journalist, World War II spy, and best-selling author.
His best known and most influential books include The Secret Life of Plants, published in 1973, Secrets of the Great Pyramid, reprinted in paperback in 1997, and Mysteries of the Mexican Pyramids, published in 1976. He is the father of author Ptolemy Tompkins.