1. Introduction 2. Algal Blooms 3. Grasshopper Infestations and the Risks They Pose to Western North America Range and Crop Lands, North of Mexico4. Senegalese grasshopper: A major pest of the Sahel 5. Locusts: An Introduction 6. Australian Plague Locust - Risk and Response 7. The Central American Locust: risk and prevention 8. Animal Hazards-Their Nature and Distribution9. Loss of Biodiversity10. Sacred Groves of Kerala 11. Multidrug Resistance: A Threat to Antibiotic Era 12. Chronic Environmental Diseases: Burdens, Causes, and Response 13. Coral Bleaching 14. Deforestation 15. Deforestation in Nepal: Status, Causes, Consequences and Responses 16. Deforestation in Southeast Asia 17. Mangroves as Coastal Rainforests: Imminent Threats, Hazards and Changing Status of Ecosystem Services 18. Land Degradation 19. Desertification 20. Rangeland degradation 21. The Aral Sea disaster: revisiting the past to plan a better future 22. Ecological Impacts of Climate Change 23. Understanding the Risks of Ionizing Radiation Exposure: A case of Dichotomy between Science and Policy 24. Meteor Impact Hazard