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Why the for-profit race into solar geoengineering is bad for science and public trust
Key Excerpts from Article on Website of MIT Technology Review
Posted: November 16th, 2025
https://www.technologyreview.com/2025/11/04/1127532/why-the-...
As scientists who have worked on the science of solar geoengineering for decades, we have grown increasingly concerned about the emerging efforts to start and fund private companies to build and deploy technologies that could alter the climate of the planet. The basic idea behind solar geoengineering, or what we now prefer to call sunlight reflection methods (SRM), is that humans might reduce climate change by making the Earth a bit more reflective, partially counteracting the warming caused by the accumulation of greenhouse gases. Many people already distrust the idea of engineering the atmosphere—at whichever scale—to address climate change, fearing negative side effects, inequitable impacts on different parts of the world, or the prospect that a world expecting such solutions will feel less pressure to address the root causes of climate change. Notably, Stardust says on its website that it has developed novel particles that can be injected into the atmosphere to reflect away more sunlight, asserting that they’re “chemically inert in the stratosphere, and safe for humans and ecosystems.” But it’s nonsense for the company to claim they can make particles that are inert in the stratosphere. Even diamonds, which are extraordinarily nonreactive, would alter stratospheric chemistry. Any particle may become coated by background sulfuric acid in the stratosphere. That could accelerate the loss of the protective ozone layer.
Note: Modifying the atmosphere to dim the sun involves catastrophic risks. Regenerative farming is far safer and more promising for stabilizing the climate. In our latest Substack, "Geoengineering is a Weapon That's Been Rebranded as Climate Science. There's a Better Way To Heal the Earth," we present credible evidence and current information showing that weather modification technologies are not only real, but that they are being secretly propagated by multiple groups with differing agendas.
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