Who Gets to Block the Sun?

Stardust Solutions, an American-Israeli start-up that raised $60 million in 2025, plans to deploy a proprietary particle system to reflect sunlight and cool the planet, claiming to avoid the harmful effects of traditional sulfur-based geoengineering. The company released guiding principles and safety frameworks this week, but critics note these documents lack crucial details about their secret particle technology and fail to address who should control such planet-altering capabilities.