Role of Environmental Science in Solving the Plastic Pollution Issue.- Pitfalls and limitations in Microplastic analyses.- Analytical Methods for Plastic (Microplastic) Determination in Environmental Samples.- Biodegradable Plastics: End of Life Scenarios.- Biological and ecological impacts of plastic debris in aquatic ecosystems.- Impact of plastic pollution on marine life in the Mediterranean Sea.- Plastic in the Aquatic Environment: Interactions with Microorganisms.- Freshwater Microplastic Pollution: The State of Knowledge and Research.- From Land to Sea: Model for the documentation of land-sourced plastic litter.- Plastic waste management: current status and weaknesses.- Plastic pollution in Slovenia: from plastic waste management to research on microplastics.- Marine Litter Assessment on Some Beaches Along the Southeastern Adriatic Coastline (Albania).- Plastic pollution in East Asia: macroplastics and microplastics in the aquatic environment, and mitigation efforts by various actors.- The Microplastics in Metro Manila Rivers: Characteristics, Sources, and Abatement.- Plastic Contamination in Brazilian Freshwater and Coastal Environments: A Source-to-Sea Transboundary Approach.- Marine litter in the Russian Gulf of Finland and South-East Baltic: Application of Different Methods of Beach Sand Sampling.- Role of Environmental Science in Tackling Plastic Pollution.