Contents -- Contributors -- 1. Fundamentals of Transport Equation Formulation for Two-Phase Flow in Homogeneous and Heterogeneous Porous Media -- 2. Incorporation of Interfacial Areas in Models of Two-Phase Flow -- 3. The Statistical Physics of Subsurface Solute Transport -- 4. Soil Properties and Water Movement -- 5. Nonideal Transport of Reactive Solutes in Porous Media: Cutting Across History and Disciplines -- 6. Recent Advances in Vadose Zone Flow and Transport Modeling -- 7. Diffusion-Linked Microbial Metabolism in the Vadose Zone -- 8. Persistence and Interphase Mass Transfer of Liquid Organic Contaminants in the Unsaturated Zone: Experimental Observations and Mathematical Modeling -- 9. Coupling Vapor Transport and Transformation of Volatile Organic Chemicals -- 10. Evaporation: Use of Fast-Response Turbulence Sensors, Raman Lidar, and Passive Microwave Remote Sensing -- 11. Emerging Measurement Techniques for Vadose Zone Characterization -- 12. Microwave Observations of Soil Hydrology -- 13. Water and Solute Transport in Arid Vadose Zones: Innovations in Measurement and Analysis -- 14. Water Flow in Desert Soils Near Buried Waste Repositories -- 15. Site-Specific Management of Flow and Transport in Homogeneous and Structured Soils -- 16. Customizing Soil-Water Expertise for Different Users -- 17. Present Directions and Future Research in Vadose Zone Hydrology -- Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- J -- L -- M -- N -- O -- P -- Q -- R -- S -- T -- U -- V -- W -- X -- Y.