The Largest Living System We’ve Been Calling “Just Ice”
The cryosphere is still predominantly framed as a physical system, defined by ice mass, hydrology, and sea level rise. What this session made clear is that this framing is incomplete. Glaciers are not inert. They are dynamic biological systems, hosting vast and largely uncharacterized microbial ecosystems, including bacteria, fungi, algae, and viruses, many highly adapted to extreme conditions and often endemic. This dimension remains largely invisible in both science and public perception. Glaciers are still widely seen as lifeless, despite growing evidence to the contrary. Initiatives such as the Baseline Project are beginning to shift this understanding. Through standardized environmental DNA sampling across glaciers on six continents, early findings reveal hundreds to thousands of species at individual sites, from the Andes to the Himalayas and East Africa. These include organisms actively shaping nutrient cycles and ecosystem processes. At the same time, glaciers are retreating rapidly. Field observations show accelerating melt, increased instability, and changing local conditions. This creates a critical imbalance. Our ability to study these systems is only just emerging, while the systems themselves are disappearing. As a result, entire microbial communities may be lost before they are ever documented. What is at stake is not only biodiversity, but a largely unexplored reservoir of biological functions and capabilities, raising a central question: what knowledge, and what potential, are we losing before we even understand it?
Sampling a Vanishing World
What is beginning to emerge from this work is not only a biodiversity story, but a discovery frontier. Microorganisms in the cryosphere operate under extreme cold, limited nutrients, and repeated freeze thaw cycles. To survive, they have evolved highly specialized metabolic pathways and biochemical properties that are rarely found elsewhere. These adaptations are not only scientifically interesting, but potentially transformative. Early research points to applications across multiple domains, from antibiotic discovery and pollutant degradation to low energy industrial processes and biomining. Some microbes are capable of functioning in conditions where conventional biological systems fail, offering new approaches to longstanding challenges such as antimicrobial resistance or resource extraction. Yet despite this potential, humanity currently uses only a very small fraction of known microbial diversity. At the same time, the way this knowledge is being generated remains fragmented. Sampling efforts are dispersed, methodologies are not always aligned, and data is often siloed. As interest grows, the question is no longer only what can be discovered, but how discovery itself is organized. Without greater coordination, there is a risk that both the science and its potential applications will develop unevenly, reinforcing existing gaps rather than expanding access and impact.
The Coldest Gold Rush on Earth
As the scientific and innovation potential of the cryosphere becomes clearer, so too do the stakes around how it is governed. What is emerging is not only a race to discover, but a question of access, ownership, and responsibility. Unlike previous resource frontiers, the challenge here is not extraction alone, but preservation, coordination, and equitable use. The discussion emphasized the importance of avoiding models where knowledge and biological resources become concentrated in the hands of a few. Instead, a more open and federated approach is being put forward. The Microbial Initiative for the Cryosphere seeks to coordinate global sampling, establish distributed biobanks, and build shared data infrastructure that enables broader participation across regions and institutions. The ambition is not only to accelerate discovery, but to ensure that the benefits of this work are more widely shared. Two enablers stand out: Education & Intergenerational engagement. Particularly for communities connected to these environments, will be essential for long-term stewardship. Equally important is inclusive access to data and biological resources, so that this emerging field does not reproduce existing inequalities in science and innovation. The cryosphere is not only disappearing as a landscape. It is disappearing as a record of life shaped over millennia, a living archive we have barely begun to understand. What is being lost is not just knowledge, but discoveries that will never be made.
