Ehrenfried Pfeiffer was a German scientist, soil scientist, leading advocate of biodynamic agriculture, anthroposophist and disciple of Rudolf Steiner. 'The Earth's Face - Landscape And Its Relation To The Health Of The Soil' reflects Pfeiffer's concern for the different landscapes of the earth, and the effects that industrialisation and mechanisation are having on the environment. He looks at various landscapes, from rural plains, woods and mountains to urban centres and gardens and explains what factors both natural and artificial lead to the degradation of soil fertility.