The challenges of climate change mitigation and hazardous pollutant cleanup have become increasingly urgent, particularly in relation to biotechnology and algal bioremediation. This new book explores innovative approaches for environmental management through the use of microand macroalgae, highlighting their growing importance in sustainable technologies and ecological restoration.This volume examines the role of algae in addressing environmental pollution, carbon sequestration, climate stabilization, wastewater treatment, and renewable biofuel production. Covering both fundamental concepts and advanced applications, the book presents current research on algal remediation strategies and the use of algal biomass in sustainable environmental management. Chapters contributed by experts discuss algae-mediated solutions for climate change mitigation, the cultivation of microalgae in algal ponds for wastewater treatment, and emerging approaches for restoring polluted ecosystems.The book also explores the application of omics tools—including genomics, transcriptomics, proteomics, and metabolomics—for phytoplankton communities for assessing the environmental quality of marine systems. In addition, it highlights the potential use of microalgae as model organisms in ecotoxicity testing and environmental monitoring. By integrating biotechnology, environmental science, and phycology, this volume provides a comprehensive overview of algaebased approaches for tackling some of today’s most pressing environmental challenges.Intended for researchers, academicians, professionals, and graduate students in phycology, microbiology, biotechnology, environmental science, plant science, and life sciences, this book offers valuable insights into modern and advanced applications of algae for climate change mitigation and pollution remediation.