Toxins and hazardous compounds affect the environment in various ways, from gradual deterioration of ecosystems to severe chronic diseases. Toxicologists carry out various safety evaluations and risk assessments to analyse the damage caused to environmental health. This book compiles the recent studies in the field of nanotoxicology, treating toxic waste, forensic toxicology, and assays for toxicity assessment. The aim of this book is to present researches that have transformed this discipline and aided its advancement. With state-of-the-art inputs by acclaimed experts of this field, this book targets students and professionals alike.