The article delves into the fascinating world of methane metabolism within archaea, shedding light on how these microorganisms play a crucial role in the global methane cycle. Through various studies and research articles, the diversity and evolution of methane-related pathways in archaea are explored, emphasizing the ecological relevance of these differences in energy conservation. Notable findings include the discovery of wide diversity in methane and short-chain alkane metabolisms in uncultured archaea, as well as the expansion of anaerobic alkane metabolism in the Archaea domain. Genome-centric metagenomics have revealed crucial insights into the methane metabolism of Bathyarchaeota and Verstraetearchaeota, contributing to a deeper understanding of anaerobic methane formation processes. Cultivation experiments conducted in Yellowstone hot springs have uncovered the presence of methylotrophic methanogenesis in Archaeoglobi, showcasing the novel microbial processes occurring in these environments. Overall, the research underscores the importance of archaea in methane metabolism and highlights the continuous discovery of new genes and pathways, enriching our knowledge of microbiology and evolution.