Contents: Introduction. 1. Psychrophilic Pseudomonas spp. in Antarctic Freshwater Lake. 2. Microbial Secondary Metabolites as Novel Antimicrobial Compounds. 3. Optimization of Degradation Potential of Several Microorganisms against Polyethylene (PE) & Polypropylene (PP) Plastics. 4. Antibiotics and their Mechanism of Action. 5. Interactions of Fungal Entomopathogens with their Insect Hosts. 6. Fastening Degradation of Rice Crop Residues using Biotechnological Approach. 7. Endophytic Microbes. 8. Fluorescent Pseudomona