This course introduces students to the diversity of microbial populations and their diverse roles in the various environments, the interactions of microorganisms with the environment and impact on ecological health. It covers topics on biosynthesis, energetic, population and community dynamics, attributes of indicator organisms, water microbiology, soil microbiology, air microbiology, microorganisms in extreme environment, waste water and solid waste treatments, biodegradation, pollution, bioremediation and engineering microorganisms to produce fuel. Techniques for characterizing microorganisms and investigating microbial processes will also be discussed. The course will be delivered in a blended format and examined by a laboratory practical and examination, in course examination and final examination.