My worry is that Stardust will pitch this as an excuse for the current
administration to promote more ff use. It will amount to another billion
dollar subsidy for the ff industry. Plus the secrecy is most alarming.
What are they hiding?
Anthony
On 11/24/2025 9:45 PM, 'GRETCHEN & RON LARSON' via geoengineering wrote:
Renaud and Geo
Thanks for the story. Np complaints from me on a private sector
actor becoming the sector leader - given the international funding
failure we just saw at COP30..
I also read the original of your (excised below) today story
(which has many more graphics). See:
https://www.politico.com/news/magazine/2025/11/21/stardust-geoengineering-janos-pasztor-regulations-00646414
Surprisingly, I found that story began a few months ago - and has
also been pretty well discussed on some Geo subgroups, which generally
endorsed the article, the company (Stardust), and the approach.
But my Google AI search also turned up an earlier this month similar
(MIT) article, that I have NOT seen mentioned at all:
https://davidkeith.earth/focus-area-term/solar-geoengineering/
<https://davidkeith.earth/focus-area-term/solar-geoengineering/>
Dr. Keith (the person I have found most credible in this Geo
area) had this very negative comment earlier this month about the
Stardust approach:
/ "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.
First of all, much of that chemistry depends on highly reactive
radicals that react with any solid surface, and second, any particle
may become coated by background sulfuric acid in the stratosphere.
That could accelerate the loss of the protective ozone layer by
spreading that existing sulfuric acid over a larger surface area."/
So the upcoming Stardust release on their (still secret until a
patent is released) proposed alternative compound will be most
interesting.
Regardless of that outcome, there is agreement that there will be no
planes flying for at least five years (or maybe 10?). Renaud -
thanks again for an interesting alert.
Ron
On 11/24/2025 1:18 AM PST Renaud de RICHTER
<[email protected]> wrote:
The Strange and Totally Real Plan to Blot Out the Sun and Reverse
Global Warming
*politico.com*/news/magazine/2025/11/21/stardust-geoengineering-janos-pasztor-regulations-00646414
<https://www.politico.com/news/magazine/2025/11/21/stardust-geoengineering-janos-pasztor-regulations-00646414>
Karl Mathiesen, Corbin Hiar
November 21, 2025
A 25-person startup is developing technology to block the sun and
turn down the planet’s
<RWL snip - of maybe 10,000 words)
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