Part 1. Fundamentals of Smart Halloysite Nanotubes 1. Introduction to Mineralogy and Geology of Smart Materials 2. Processing and Purification of Halloysite Nanotubes 3. Physicochemical Properties of Halloysite Nanotubes 4. Strategies for Derivatization and Functionalization of Halloysite Nanotubes 5. Challenges of Derivatization of Halloysite Nanotubes 6. Characterization of Intelligent Halloysite Nanotubes 7. Selection of Hybrid Halloysite Nanotubes Based on Guest Molecules 8. Fabrication Strategies for Hybrid Halloysite Nanotubes Based on Guest Molecules 9. Toxicity and Environmental Fate of Halloysite Nanotubes Part 2. Applications of Smart Halloysite Nanotubes 10. Halloysite Nanotubes as a Green Alternative for Functional Organic/Inorganic Nanohybrids 11. Halloysite Nanotube-based Polymers as a Smart and Economical Flame-retardant Tool 12. Halloysite Nanotube-based Bionanocomposites as Packaging Material 13. Smart Halloysite Nanotubes as Fillers for Industrial Applications 14. Environmental Applications of Halloysite Nanotubes 15. Halloysite Nanotubes as Support Material for Enzyme Immobilization 16. Halloysite Nanotube-based Drug Delivery Systems 17. Hybrid Halloysite Nanotubes and their Role as Nanocontainers for Biomedical Applications 18. Forensic Aspects of Halloysite Nanotubes Part 3. Case Studies 19. Case Study 1 20. Case Study 2 21. Case Study 3 Part 4: Commercialization and Future Prospects of Halloysite Nanotubes 22. Commercialization of Halloysite: From Rocks to Market 23. Future Prospects of Halloysite Nanotubes