Why study Archaea?
Archaea are ubiquitous microorganisms, inhabiting environments as diverse as deep-sea hydrothermal vents, soils, oceans, and the human gut. In these diverse habitats, they play essential ecological roles, particularly in global carbon and nitrogen cycling. Methanogenic archaea are the only organisms capable of biological methane production, making them major contributors to the global methane cycle and an important influence on Earth's climate. Beyond their ecological importance, archaea hold enormous potential for biotechnology. Their enzymes are often highly stable under extreme conditions, making them valuable tools for industrial applications and fundamental biological research, while methanogenic archaea are being explored for sustainable biomethane production. More recently, archaea have provided fundamental insights into conserved cellular processes and the evolution of complex life. In particular, the discovery of Asgard archaea has placed them at the centre of research into eukaryogenesis, as these organisms encode many proteins once thought to be unique to eukaryotes. As new archaeal lineages continue to be discovered, they continue to reshape our understanding of cellular evolution and reveal the remarkable diversity of archaeal biology.
