Mission to Mars, testing water quality in the lakes of Ireland, and bringing the Internet to remote sub-Saharan villages all have something in common. They are all examples of networking in extreme environments that overwhelm traditional technology and require new communications solutions. Delay and disruption networking (DTN) is an up-and-coming technology that enables networking in extreme environments. This complete reference on DTN covers applications requirements, DTN protocols, and network implementation. Thoroughly examining the causes of delay and disruption, the book shows how to engineer a robust network that can survive the harshest conditions. DTN is a popular solution for extreme sensor applications, and this cutting-edge resource explores all the issues, including power management, related to DTN and sensor networking. In addition to providing practical insights and case studies, the book also looks at routing, custody in practice, and security in DTN.