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Columbia Business School’s Professor Gernot Wagner spoke with Washington Post reporter Nicolás Rivero about the sheer scale, complexity, and cost of Project Stardust—the geoengineering startup aiming to cool the planet by reflecting sunlight. Wagner explained that implementing such a system would require vast resources, sophisticated global coordination, and years of rigorous testing. He cautioned that geoengineering solutions, while scientifically intriguing, carry significant environmental and geopolitical risks if deployed prematurely or without international oversight. Wagner emphasized that large-scale interventions should not distract from the critical work of reducing greenhouse gas emissions.
