The book "Greenhouse Gas Emissions - Fluxes and Processes" offers a comprehensive analysis of greenhouse gas (GHG) emissions and their interactions in various ecological systems. Given the recognized link between human activities and climate change, accurately estimating GHG production rates is crucial. This specialized book serves as a valuable resource, providing carefully assessed values for GHG emissions in critical climate zones across both aquatic and terrestrial environments. It highlights the different measurement methods and their biases that have led to conflicting results in the current literature. Additionally, innovative approaches, such as laser measurement of CO2 concentration gradients, are presented. The combination of monitoring, process studies, and modeling makes this book an important contribution for scientists and policymakers engaged in reducing greenhouse gas emissions.