Marketplace Marketplace

From "How We Survive": How to Dim the Sun

Jun 14, 2026

Summary

Marketplace’s Amy Scott explores solar geoengineering with Make Sunsets founders Luke Eisman and Andrew Song, who launch sulfur-filled balloons to dim the sun. The episode contrasts their startup approach with expert warnings from David Keith and Kate Marvel about unknown risks. It also covers local backlash against a marine cloud brightening study in Alameda, highlighting the ethical and scientific debates surrounding large-scale climate interventions.

Topics discussed

Launching sulfur balloons with Make Sunsets Meet the founders of Make Sunsets The science and risks of stratospheric aerosol injection Activist backlash and the Alameda cloud brightening dispute Climate scientist Kate Marvel on geoengineering dangers Outro and credits
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