The Thermostat Wars: Inside the Simulation That Exposed a Global Geoengineering Arms Race

When climate researcher Colleen Golja stepped into a sterile, windowless conference room at Queen Mary University of London last September, she carried with her a naive, albeit noble, assumption: that when the survival of the biosphere is at stake, humanity would prioritize objective science and rational policy. She believed in the "seat at the table" model of diplomacy. By the end of the week, those hopes had been systematically dismantled by a brutal exercise in geopolitical realism.

Golja was a participant in Exploring Geopolitical Tipping Points and Climate Cooling Strategies, a sophisticated war game designed to simulate how the world might respond to the rapid emergence of solar radiation modification (SRM). The goal was simple in theory: prevent an uncontrolled race to weaponize the planet’s thermostat. In practice, the exercise revealed a harrowing reality—the global governance of our climate future is likely to be hijacked by state sovereignty, military paranoia, and the interests of the fossil fuel industry.

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The Technology: Dimming the Sun

Solar radiation modification—the umbrella term for technologies designed to reflect a fraction of sunlight back into space—has transitioned from a niche, speculative corner of climate science to a high-stakes commercial and military frontier. The most common proposal involves injecting sulfur dioxide or other aerosols into the stratosphere to mimic the cooling effects of large volcanic eruptions.

While the cooling potential is scientifically sound, the risks are profound. Models suggest that while one region might find relief, another could face catastrophic drying or intensified tropical storm cycles. Furthermore, the "termination shock" of suddenly stopping such a program could cause global temperatures to spike with violent, unpredictable speed. Despite these dangers, the private sector is diving in. US-Israeli startup Stardust Solutions has raised $60 million to develop atmospheric intervention tools, while figures like Elon Musk have publicly argued that such geoengineering is not merely an option, but a necessity for the survival of the species.

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Chronology of a Collapse

The simulation, organized by Danielle Young of Leeds University, was designed as a time-compressed look at the next decade. Participants—a mix of military officials, diplomats, and scientists—were thrust into a UN committee tasked with drafting an international governance framework.

Phase 1: The Present (The Fog of Distrust)

From the opening bell, the atmosphere was defined by "national interest." When the committee attempted to draft rules for outdoor research, the delegations from the United States and China hit an immediate impasse. Neither superpower was willing to accept a deal that might constrain their own programs or, worse, grant their rival a technological advantage. Major Jeffrey Nielsen, playing a US national security attaché, captured the mood perfectly: "Worse than no deal at all is any deal that favors China."

Phase 2: September 2027 (The Intelligence Trap)

The game’s organizers introduced a series of "intelligence" prompts to test the players’ reactions. When the Russian delegation was handed a dossier claiming a US plane near the Bering Strait was conducting covert geoengineering, the response wasn’t a call for transparency, but an accusation of sabotage. Distrust became the default language of the room. When Beijing attempted to float a technology-sharing program with a player representing SpaceX, the latter immediately reported it to the US, leading to a breakdown in talks and a walkout by key nations.

Phase 3: September 2028 (The Shadow Players)

In the final stages, the simulation introduced a "Climate Futures Cooperative" (CFC), an NGO that appeared to be a neutral advocate for scientific oversight. It was later revealed to be a front for the fossil fuel industry, strategically designed to fund specific scientists while sowing discord. By the time the game concluded, no deal had been signed. The participants, trapped in a cycle of suspicion, were more concerned with preventing their rivals from gaining an edge than with the worsening climate disasters being reported in the game’s news cycle.

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Supporting Data and Real-World Parallels

The simulation was not merely a hypothetical exercise; it was a mirror reflecting the fragmented state of modern international relations. The findings of the final report, sponsored by the UK’s Advanced Research and Invention Agency, were stark: "Strategic competition and state sovereignty drove the simulations, not climate concerns."

The "arms race" dynamic observed in the game is already beginning to manifest in the real world:

• The "Weather Sovereignty" Concept: Conservative think tanks in the US have already begun framing solar geoengineering as a matter of national security, explicitly urging the Trump administration to "protect American weather sovereignty" against Chinese influence.
• The UK Pivot: The British government recently published its first official policy paper on the topic, maintaining a stance of research-only—a position that critics argue will inevitably shift toward deployment as climate pressures intensify.
• Commercial Lobbying: Stardust Solutions CEO Yanai Yedvab has noted that the task of selling these technologies is becoming easier as policymakers grow increasingly desperate, signaling a move from theoretical science to active lobbying.

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The Marginalization of Science

For Colleen Golja, the most painful aspect of the simulation was the systematic silencing of scientific evidence. As the only participant tasked with providing technical advice, she found herself an island of logic in a sea of political theater. Whenever she attempted to present data on the potential climate impacts of aerosol dispersal, her contributions were ignored or exploited as talking points to discredit rival nations.

"I was just so surprised about how little anyone actually cared about the science," Golja lamented. The "emulator" she prepared—a scientific model of weather pattern shifts—was essentially treated as an obstacle to the players’ strategic goals. By the final day, when she was approached by the CFC (the industry-backed front), her credibility was effectively destroyed, leaving the voice of science isolated and fragmented.

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Implications: A Future of "Personal" Climate Action

The simulation leaves us with a chilling conclusion: if a group of experts cannot agree on a governance framework in a controlled, academic environment, the prospects for international cooperation in the face of a genuine planetary crisis are bleak.

The implications are twofold. First, we are likely moving toward a "Wild West" era of solar geoengineering, where individual nations or corporations act unilaterally, triggering unpredictable environmental consequences that could spiral into international conflict. Second, the reliance on top-down, UN-style diplomacy may be insufficient for a problem that is being treated as a zero-sum game by the world’s major powers.

For Colleen Golja, the experience was transformative, though not in the way she had hoped. She has returned to her home in Connecticut, turning away from the high-level policy circles where she once hoped to make an impact. Instead, she is pivoting to the local level—helping her community build seawalls and buffers.

"To try and make a difference where it feels like I actually have traction," she says, her voice heavy with the realization that the global stage is not yet ready for reason. "Now it feels a little bit more personal."

As the world continues to warm and the physical impacts of climate change—like the recent glacier collapse in the Himalayas—become more frequent, the pressure to deploy "the thermostat" will only grow. The question is no longer whether we can engineer the climate, but whether we are mature enough as a species to handle the power of doing so without igniting a conflict that burns the world faster than the sun ever could. The simulation at Queen Mary University serves as a grim warning: in the current geopolitical climate, we are far more likely to fight over the dial than we are to agree on the setting.