Columbia University Study: Geoengineering Fails on Every Level
A new peer-reviewed Scientific Reports paper published last week by Columbia University scientists delivers a devastating blow to solar geoengineering, the controversial practice of attempting to cool the planet by spraying sunlight-reflecting particles into the upper atmosphere to block or deflect incoming solar radiation
The technique is known as ‘stratospheric aerosol injection’ (SAI).
SAI is a form of ‘solar radiation modification’ (SRM), a practice that official White House documents acknowledge is being funded both “covertly and openly.”
But the stratosphere should not be confused with the troposphere.
The troposphere is where the FAA, NASA, and NOAA admit metal nanoparticle- and sulfur-containing commercial jet emissions produce—when the air at altitude is cold and wet enough (Schmidt-Appleman Criterion)—visible lines that linger, disperse, and block the sun and sky.
These tropospheric sun- and sky-blocking emissions are sometimes referred to as “chemtrails.”
SAI is different in that it deliberately targets the stratosphere, a much higher and more stable layer of the atmosphere, with the explicit goal of altering temperatures worldwide.
SAI is not a byproduct of aviation, but a planned, large-scale climate intervention intended to reflect sunlight away from Earth.
While commercial aviation-caused weather manipulation—what could be called apparently accidental ‘tropospheric aerosol injection’ (TAI)—occurs year-round and all over the world, SAI refers to the deliberate, large-scale injection of reflective particles into the stratosphere.
Unlike TAI, SAI is an experimental practice reportedly still limited to a small number of government- and university-backed projects.
The new study, titled “Engineering and logistical concerns add practical limitations to stratospheric aerosol injection strategies,” confirms that spraying reflective particles into the atmosphere to cool the planet is not only impractical—it’s dangerous.
The authors conclude bluntly that “the design space for a ‘low-risk’ SAI strategy, particularly with solid aerosol, may be more limited than current literature reflects.”
Once real-world physics, economics, and governance are factored in, the entire concept collapses.
The findings come as Israeli-U.S. geoengineering company; Stardust Solutions, announces a $60 million fundraising round for its efforts to block the sun by spraying particles—the composition of which has not been disclosed by the company—into the atmosphere as soon as April 2026.
See more here substack.com
Header image: Geoengineering.global
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Ken Hughes
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What do you mean April 2026? They’ve been doing this for years! ‘dong it now. Just look up. Oh, and look at your newly cleaned car with all the yellow waxy fleck now on it immediately after cleaning – all year long.
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