Modern Applications, Principles of Green Chemistry • Prevention Prevent waste and minimize the use of hazardous substances. •Atom Economy • Less Hazardous Chemical Syntheses • Designing Safer Chemicals • Safer Solvents and Auxiliaries • Design for Energy Efficiency • Use of Renewable Feedstocks • Reduce Derivatives • Catalysis • Design for Degradation • Benefits of Green Chemistry • Reduced Environmental Impact • Improved Human Health • Increased Efficiency • Sustainable Development • Applications of Green Chemistry • Pharmaceuticals • Agriculture • Materials Science • Challenges and Future Directions • Scalability • Cost Green chemistry processes can be more expensive than traditional methods. • Education and Training