One third of the world's soils have already been degraded. The burden on the land continues to grow under the combined pressures of demography, urbanization, ar

This introductory book to the six volume series includes an introduction defining the critical zone for mankind that extends from tree canopy and the lower atmo

One third of the world's soils have already been degraded. The burden on the land continues to grow under the combined pressures of demography, urbanization, ar

This book invites the reader to look differently at two seemingly mundane resources: soil and water. Water possesses extraordinary properties which form the fou