Food security in water-short countries - coping with carrying capacity overshoot / Malin Falkenmark & Mats Lannerstad -- Global agricultural green and blue water consumptive uses and virtual water trade / Junguo Liu & Hong Yang -- Water scarcity and food security: a global assessment of water potentiality in Tunisia / Jamel Chahed, Mustapha Besbes & Abdelkader Hamadane -- Can human ingenuity, science and technology help solve the world's problems of water and food scarcity? / Elena Lâopez-Gunn & M. Ramâon Llamas -- Producing more or wasting less? Bracing the food security challenge of unpredictable rainfall / Jan Lundqvist -- Prioritising the processes beyond the water sector that will secure water for society - farmers, fair international trade and food consumption and waste / J.A. [Tony] Allan -- Present and future roles of water and food trade in achieving food security, reducing poverty and water use / Juan A. Sagardoy & Consuelo Varela-Ortega -- Economic aspects of virtual water trade: lessons from the Spanish case / Alberto Garrido ... [et al.] -- Water commoditization: an ethical perspective for a sustainable use and management of water resources, with special reference to the Arab region / Magdy A. Hefny -- Water scarcity risks: experience of the private sector / Stuart Orr & Anton Cartwright -- Incorporating the water footprint and environmental water requirements into policy: reflections from the Doänana region (Spain) / Maite M. Aldaya, Francisco Garcâia Novo & M. Ramâon Llamas -- The blue, green and grey water footprint of rice from both a production and consumption perspective / Ashok K. Chapagain & Arjen Y. Hoekstra -- Water quality and nonpoint pollution: comparative global analysis / Josâe Albiac ... [et al.] -- Intensive groundwater development: a water cycle transformation, a social revolution, a management challenge / Emilio Custodio -- Electricity reforms and its impact on groundwater use: evidence from India / Aditi Mukherji, Tushaar Shah & Shilp Verma -- Water and energy nexus - role of technology / Joppe F. Cramwinckel -- Energy supply for the coming decades and the consequent water demand / Ignasi Nieto -- The economics of desalination for various uses / Xavier Bernat ... [et al.] -- Postscript. The impossibilities of water in agriculture: an increasingly unreal world. What we have to do about it? / Margaret Catley-Carlson.