This comprehensive book details greenhouse gas (GHG) emissions across a range of sources, sectors, and countries, with particular emphasis on the United States and other developed nations. It presents an in-depth analysis, covering the roles of industries, policymakers, and regulatory frameworks in contributing to and mitigating GHG emissions. The authors discuss emission measurement and monitoring methodologies, supported by real-life case studies illustrating how corporations, policymakers, and industry leaders can implement responsible decarbonization strategies. Additionally, it covers the critical verification aspect of enforcing climate policies and regulations. Features Provides a detailed sector-wise breakdown of GHG emissions across energy, transportation, industry, and agriculture. Explains the scientific basis of emissions and their regulatory frameworks governing them under global agreements such as the Paris Agreement and U.S. EPA policies. Presents recommendations for energy-efficient strategies and key actions that industries and policymakers can adopt to reduce GHG emissions. Highlights AI, big data, and IoT as tools for carbon monitoring and emission tracking. Offers guidance for professionals and scholars on estimating emissions and implementing reduction methods at both organizational and policy levels. This book is essential for environmental and energy professionals, policymakers, corporate sustainability officers, researchers, and industry leaders engaged in emissions reduction, regulatory compliance, and climate policy. It is also a valuable resource for EHS personnel, facility administrators, students, and faculty studying and teaching the environmental impacts of GHG emissions.