Preface part I: systems of Earth 1. Introduction 2. Lithosphere 3. Atmosphere 4. Hydrosphere 5. Biosphere part II: disaster and disaster Management 6. Disasters 7. Characteristics of hazards 8. categorisation of disasters 9. Biological hazard 10. Anthropogenic/technological hazards 11. Environmental degradation: land and Soil degradation 12. Environmental degradation: air and Water 13. Environmental degradation: deforestation, desertification and others 14. Risk 15. Vulnerability 16. Impact of disasters part III: Disaster mitigation 17. Disaster Management 18. Mitigation 19. Response to natural disasters 20. Mitigation of manmade disasters 21. Evacuation 22. Recovery 23. International disaster assistance 24. Disaster preparedness 25. Disaster resilience 26. Disaster Management in India 27. Response to disasters 28. International frameworks in disaster Management index.