A group of experts gathered in London to play out a scenario about dimming the Sun. The war game was designed to test whether the world could agree on how to manage solar geoengineering — a technology that could cool the planet but carries huge, unknown risks. The result was not a success story.
The simulation was called Exploring Geopolitical Tipping Points and Climate Cooling Strategies. It brought together a couple dozen foreign-relations experts, scientists, military personnel, and former government officials. Their task was to prevent an uncontrolled global race to develop a technology aimed at cooling the planet. According to WIRED, the exercise revealed deep problems with how the world might handle such a powerful tool.
What Is Solar Geoengineering and Why It Worries Experts
Solar geoengineering is a set of ideas for cooling the Earth by reflecting some sunlight back into space. One common idea is to release particles into the atmosphere that would dim the Sun slightly. Supporters say it could lower global temperatures quickly. Critics say it comes with vast, unknown risks that could reshape life on Earth. The war game focused on these risks and the political fight that could follow.
Climate researcher Colleen Golja took part in the first in a series of war games. Before the simulation, she believed that science and reason would guide decisions about the planet's fate. She thought agreeing to ethical research would be easy. The exercise changed her mind.
"I thought that would be such an easy thing. Like, we can all agree to do ethical research and make sure it's for the better of all humans. And boy, was I wrong." — Colleen Golja, via WIRED
Why the War Game Went Worse Than Expected
The simulation showed that reaching a global agreement on solar geoengineering is far harder than it looks. Even a room full of experts could not easily settle on rules for ethical research or shared control. The exercise highlighted the risk of an uncontrolled race, where countries or groups might act alone without global consent.
- The war game included military personnel and former government officials, not just scientists.
- The goal was to prevent an uncontrolled global race to develop the technology.
- The simulation was the first in a series of war games.
- The outcome left a climate researcher shocked at how difficult agreement was.
Our Take: This Is a Warning We Should Not Ignore
To put it plainly, this war game is a warning. If a couple dozen smart, experienced people cannot agree on how to govern solar geoengineering in a simulation, real-world leaders will struggle even more. The technology could cool the planet, but it could also spark conflict, mistrust, and risky unilateral action.
In our view, the lesson is simple: the world is not ready to manage dimming the Sun. Before any country tries it, we need clear international rules, honest research, and a way to include all voices — not just the powerful ones. The war game did not give us answers. It gave us a mirror, and the reflection is not flattering.
Readers should watch this space. Solar geoengineering is moving from science fiction to serious policy debate. The next war game in the series may show whether the world can learn from its mistakes — or repeat them.
