Natural Gas in the 21st Century provides an overview of the evolving role of natural gas within the global energy framework, addressing crucial topics relevant to today's energy markets and environmental considerations. This edited volume explores key challenges and innovations, including methane emission mitigation, sustainable resource management, and advancements in unconventional gas technologies. It emphasizes strategies for reducing environmental impact through carbon management and enhanced extraction techniques while also highlighting significant technological progress in waste heat recovery and carbon capture. The book offers a global perspective, examining regulatory frameworks, market dynamics, infrastructure interdependencies, and the growing significance of liquefied petroleum gas (LPG) and renewable BioLPG, particularly in Europe and Africa. Methodological advancements in petroleum research and analytical approaches to fuel quality assessment are also discussed. Ideal for scholars, industry professionals, policymakers, and environmentalists, this comprehensive resource delivers valuable insights into the sustainability and future developments of natural gas utilization.