Contents: Introduction. 1. Noise Level Monitoring at Nganglam, Bhutan. 2. Noise Pollution. 3. Ambient Noise Level near the Mining Area and Narayan Sarovar Wildlife Sanctuary. 4. Noise Monitoring and Assessment at Larsemann Hills, East Antarctica. 5. Dioxins. 6. Toxic Effect of Air Pollution and its Remediation Technique. 7. Environment Impact Assessment of Highway Development/Expansion. 8. Environmental Standards with special reference to Air Quality and Noise Level.