Part I: A New Discipline: Development Engineering.-Chapter 1: The Role Of Technology In Development.- Chapter 2: The Development Engineering Framework: Innovate, Evaluate, Scale.-Chapter 3: Asking the Right Questions.-Part II: Water, Sanitation and Health.-Chapter 4: Advances In Water and Health Technologies.-Chapter 5: Case Study: Electrochemical Arsenic Remediation, India (Innovation).-Chapter 6: Case Study: Information For Intermittent Water Supply, India (Evaluation).-Chapter 7: Case Study: Mobile Phone Diagnostic Microscopy, Vietnam/Cameroon (Innovation, Scale).-Part III: Governance.- Chapter 8: Technologies for Governance And Accountability.-Chapter 9: Case Study: Sensors For Aid Accountability, Rwanda (Evaluation, Scale).-Chapter 10: Case Study: High Resolution Development Indicators, Afghanistan (Evaluation, Scale).-Chapter 11: Case Study: Monitoring For Elections And Public Service Delivery, Kenya (Evaluation, Scale).-Part IV: Energy and Resources.-Chapter 12: Advances in Ener