The Company That’s Raised $60 Million to Geoengineer the Planet

Shift Key with Robinson Meyer · Jul 15, 2026 · 1h 1m

For more than 30 years, a heterodox group of scientists have proposed injecting sulfate aerosols into the stratosphere to reflect sunlight away from Earth, thereby cooling the atmosphere and reversing climate change.

But actual research into the idea has remained taboo, or at least the province of university and government labs. Then, last year, Heatmap broke the story of an Israeli-American company named Stardust Solutions that had raised $60 million to develop a new solar geoengineering technology. This system would be easier to control and track than the traditional approach to…