This reference book reviews various aspects of microplastics, from their sources and manifestation in terrestrial, aquatic, and air environments to their fate in wastewater treatment systems. It also covers sampling, analysis, and detection methods for microplastics, along with advanced instrumentation for quantification. Further, the book presents health risk analysis and the toxicity of microplastic contamination, including their ecotoxicological impact on the environment and health risks associated with their accumulation in the tropical food chain and food web. The chapters also present studies exploring the health risks associated with microplastic additives and their interactions with other pollutants. The final chapters focus on plastic and microplastics management, exploring advanced technologies for bioplastics production, the biodegradation of plastics and bioplastics, and the role of nanotechnology in plastic management. This book serves as an important source for researchers, policymakers, and environmentalists concerned about the impact of microplastics on ecosystems and human health.