In our research group we use omics data to link the role of microorganisms to the (geo)chemistry of the environment and biotechnological applications. The techniques are applied to various projects including: (1) Changes in microbial population and their functions as a response to environmental changes in Baltic Sea sediments; (2) Microbial community responsible for acid and metal release from an acid sulfate soil; (3) Structure and function of microbial communities in the deep biosphere; (4) development of the industrial biotechnology of ‘biomining’ to extract copper from chalcopyrite, the largest remaining resource of copper mineral (MiCCuR); and (5) Selective biorecovery of critical raw materials from primary and secondary sources (Biorecover).