Contents:– Environmental Issues; Microbial Ecology; Global Warming and Climatic Change; Cycling of Nutrients in Ecosystem; Extremophiles – Importance and its Applications; Soil Pollution; Sources, Effects and Challenges in Bio-monitoring and Bioremediation Related to Emerging Contaminants in Aquatic Environment; Seaweeds- A Treasure in Natural System; Potable Water; C- Nanomaterials Subordinated Membrane Technology to get Encirclement of Compassionate Potable Water; Seaweed – Microbial Interaction; Seaweeds as a Source of Functional Proteins against Coronaviruses; Seaweeds and Human Nutrition; Microbial Biofilms; Pharmaceutical Residues and their Metabolites in Water and Remediation Measures; An Overview on Microbial Biofilm, Classification, Treatment and Control