Idaho's Prohibition on Geoengineering Pending
HJM15 awaits a hearing
A quick note on the HJM15.
Rep Hostetler did an amazing job presenting the memorial and now we await a hearing. Now we await a public testimony date. Meanwhile, think about geoengineering-specific topics you would like to cover.
Comment here or email me if you need help. Plan for 2 minutes.
Testimony tips
1. Do not discuss cloud seeding. There will be opportunity to provide comment on cloud seeding later.
2. Focus on large-scale geoengineering.
3. Use federal government documents.
4. Or use private industry examples.
5. Voice your concerns about possible open-air testing and risks.
6. Resources as you draft your public comment:
Stardust: https://www.politico.com/news/magazine/2025/11/21/stardust-geoengineering-janos-pasztor-regulations-00646414 and
Make sunsets: https://makesunsets.com
UW: https://www.politico.com/news/2025/07/27/california-sunlight-dimming-experiment-collapse-00476983
PNNL: https://www.pnnl.gov/doe-capabilities/earth-systems-science-engineering
Bloomberg: https://www.bloomberg.com/news/videos/2025-04-10/why-money-is-flowing-into-geoengineering-video
Memorial details
HJM 15 Statement of Purpose
The purpose of this joint memorial is to urge the United States Congress to prohibit unauthorized geoengineering and atmospheric modification activities conducted over the State of Idaho without state approval, public disclosure, or transparency.
This memorial asserts Idaho’s responsibility under the Tenth Amendment to protect public health, private property, agriculture, and environmental integrity from potential harm caused by intentional atmospheric interventions, including weather modification and solar radiation management. It expresses concern that such activities may occur without sufficient oversight, consent, or evaluation of long-term impacts on human health, livestock, crops, ecosystems, and weather stability.
The memorial calls upon Congress to establish clear prohibitions and penalties for unauthorized geoengineering activities, ensure coordination with state and federal enforcement agencies, and respect state sovereignty over activities conducted within and above Idaho’s borders.
Bill text
HOUSE JOINT MEMORIAL NO.15 (2026) - Weather modification
Co-sponsors
A sincere thank you to each Representative listed above. We are so grateful.



Terrific work to the entire team! We shared on our Substack Notes. Check it out:
Idaho Legislature — Geoengineering Awaits a Hearing. Idaho’s Prohibition on Geoengineering Pending. HJM15 awaits a hearing. Rep Hostetler did an amazing job presenting the memorial and now we await a hearing and public testimony date. Think about geoengineering-specific topics you would like to cover. By Sara A (02/20/26): https://substack.com/profile/68304299-big-e/note/c-217392592