They War-Gamed Dimming the Sun. It Went Even Worse Than You Think

A first-of-its-kind simulation of solar geoengineering revealed that dimming the sun could trigger a dangerous arms race among nations, with countries deploying the technology unilaterally to counter climate change. The war game showed geopolitical tensions escalating as states compete for control of the global thermostat, potentially leading to conflict and unintended climate consequences.