A new study has revealed that the 5,300-year-old mummified remains of Ötzi the Iceman harbor a dynamic ecosystem of both ancient and modern microbes. Researchers from the University of Trento analyzed skin swabs, tissue fragments, and thawed-water samples, comparing them to soil and ice from Ötzi's discovery site. They found persistent Pseudomonas bacteria and anaerobic bacteria from the Clostridium group in internal tissues, indicating an ancient microbial community originating from the discovery site. Furthermore, four cold-adapted yeasts, including Glaciozyma, were identified, with Glaciozyma potentially being metabolically active and capable of replication under current conservation conditions of -6°C. These findings highlight that Ötzi's mummy is a living archive where ancient glacier-derived microbes and modern contaminants coexist, underscoring the need for strict environmental controls to prevent microbial proliferation.