Water, energy and food are key resources to sustain life, and are fundamental to national, regional, and global economies. These three resources are interlinked in multiple ways, and the term "nexus" captures the interconnections. The nexus has been discussed, debated, researched, and advocated widely but the focus is often on the pairings of "water-energy" or "water-food" or "energy-food". To really benefit from the nexus approach in terms of resource use efficiency, it is essential to understand, operationalize, and practice the nexus of all three resources. As demand for these resources increases worldwide, using them sustainably is a critical concern for scientists, citizens, governments, and policymakers.

Volume highlights include:

• Contributions to the global debate on water-energy-food nexus
• Examples of the nexus approach in practice from different regions of the world
• Perspectives on the future of the nexus agenda

Water-Energy-Food Nexus: Principles and Practices is a valuable resource for students, research scholars, and professionals in academic institutions with strong interests in interdisciplinary research involving geography, earth science, environmental science, environmental management, sustainability science, international development, and ecological economics. The volume will also be useful for professionals, practitioners and consultants in NGOs, government, and international agencies.

P. Abdul Salam, Sangam Shrestha, Vishnu Prasad Pandey, and Anil Kumar Anal Asian Institute of Technology, Thailand