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Scribd
scribd.com › document › 701849666 › US20220002159A1
Graphene Oxide for Cloud Seeding Patent | PDF | Nucleation | Nanoparticle
This document discloses a 3D reduced graphene oxide/silica dioxide (PrGO-SN) composite material for ice nucleation. The PrGO-SN composite is synthesized through a sol-gel process involving graphene oxide, ammonia, ethanol, and tetraethyl orthosilicate. Testing showed the PrGO-SN composite can initiate ice nucleation at -8°C and its ice nucleating particle number increases rapidly with decreasing temperature. The PrGO-SN composite is proposed as an improved material for applications like cloud seeding due to its high ice nucleation ability and potential for low-cost mass production. ... We take content rights seriously. If you suspect this is your content, claim it here. ... This document discloses a 3D reduced graphene oxide/silica dioxide (PrGO-SN) composite material for ice nucleation. The PrGO-SN composite is synthesized through a sol-gel process involving graphene oxide, ammonia, ethanol, and tetraethyl orthosilicate.
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BBC
bbc.com › future › article › 20260203-why-china-is-pushing-controversial-cloud-seeding-tech
How China became fixated on cloud seeding
February 12, 2026 - China has been attempting to artificially increase its rainfall since the 1950s using a well-known yet still controversial method: cloud seeding. This aims to coax clouds to produce more moisture using tiny particles, often silver iodide, which ...
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Geoengineering Watch
old1.geoengineeringwatch.org › graphene-skies
Graphene Skies? » Graphene Skies? | Geoengineering Watch
What aren’t we being told? Is the highly toxic and controversial element graphene being seeded into our skies as part of the ongoing covert climate intervention operations? Is climate modification the only motive behind the elements being utilized for atmospheric aerosol spraying programs? Are other agendas also being carried out? Do the weather makers and their controllers consider the consequences of their actions? Or is it possible that many of the consequences are, in fact, part of the agenda? Please review the attached 5 minute video report for input and answers. All are needed in the critical battle to wake populations to what is coming, we must make every day count. Share credible data from a credible source, make your voice heard. Awareness raising efforts can be carried out from your own home computer. DW · Must view, THE DIMMING, our most comprehensive climate engineering ...
People also ask

Evaluate the effectiveness of newly developed nanotechnology-based cloud-seeding materials compared to traditional methods.
New nanotechnology-based materials, such as core/shell NaCl/TiO2 particles, are more effective than traditional methods as they can absorb larger amounts of water vapor and form larger droplets, enhancing rain production. These materials use less AgI, are more efficient at lower humidities, and are more active below -5°C, improving precipitation efficiency compared to traditional AgI methods .
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scribd.com
scribd.com › document › 701849666 › US20220002159A1
Graphene Oxide for Cloud Seeding Patent | PDF | Nucleation | Nanoparticle
How do graphene derivatives contribute to ice nucleation, and what are their limitations?
Graphene derivatives such as graphene oxide exhibit ice nucleating abilities because water molecules are efficiently captured by various hydrophilic oxygen-contained functional groups on graphene. However, their ice nucleation activities are typically observed at lower temperatures (below -20°C), which is less ideal compared to other materials like K-feldspar and silver iodide that function at higher temperatures .
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scribd.com
scribd.com › document › 701849666 › US20220002159A1
Graphene Oxide for Cloud Seeding Patent | PDF | Nucleation | Nanoparticle
What are the potential advantages of a 3D graphene oxide structure for ice nucleation applications?
The 3D graphene oxide structure offers excellent thermal conductivity and a highly porous framework, which favors ice nucleation of supercooled water. Its hydrophilic SiO2 nanoparticles enhance adsorption and condensation of water vapor, supporting nucleation and growth of ice crystals. These structural advantages are not achieved by standard ice nucleating particles .
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scribd.com
scribd.com › document › 701849666 › US20220002159A1
Graphene Oxide for Cloud Seeding Patent | PDF | Nucleation | Nanoparticle
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Google Patents
patents.google.com › patent › WO2020148644A1 › en
WO2020148644A1 - 3d reduced graphene oxide/sio 2 composite for ice nucleation - Google Patents
Most studies focus on hygroscopic materials with high water vapor adsorbing capabilities as potential cloud seeding materials, and they are only effective at above -zero temperatures. However, studies on cloud seeding at subzero temperature (cold cloud seeding) have not seen much progress, with Agl as the most commonly used cold cloud seeding materials for decades, which is often associated with controversial environmental risk.
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Eureka
eureka.patsnap.com › achieve-fixation › 3d reduced graphene oxide/sio 2 composite for ice nucleation
3D reduced graphene oxide/sio 2 composite for ice nucleation - Eureka | Patsnap
However, there has not been much progress in the research on cloud seeding at sub-zero temperatures (cold cloud seeding), where AgI, as the most commonly used cold seeding cloud material for decades, is often associated with controversial environmental risks
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NYTimes
nytimes.com › interactive › projects › cp › summer-of-science-2015 › latest › graphene
Summer of Science - Graphene Origami - NYTimes.com
Observing the behavior of such a teensy, so to speak, black hole, Ms. Baldassare and her colleagues hope, will help them understand where the monstrous black holes found in regular galaxies come from and how they grow so big. Some astronomers speculate that they are seeded from giant clouds of primordial gas, or the collapse of gargantuan stars that inhabited the dawn of time, and then grew by merging with other black holes as galaxies collided during the rough and tumble days of the early universe. The RGG 118 black hole is like finding a preteenager on the verge of all this. In the fullness of cosmic time, it could grow into a true monster. —DENNIS OVERBYE ... Jodi Carrigan, the lead keeper of primates at Zoo Atlanta, on her technique for making gorillas comfortable with toothbrushing. ... If this scientific implement doesn’t look familiar to you, that’s O.K.
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Geoengineering Watch
geoengineeringwatch.org › home › other important news links › mobile app articles › graphene skies?
Graphene Skies? - Geoengineering Watch
July 29, 2021 - Chemical ice nucleation cloud seeding processes are a primary component of the ongoing and expanding global climate engineering operations. The numerous forms ... Dane WigingtonGeoengineeringWatch.orgClimate modification nanoparticles in our atmosphere are engineered, lab testing confirms. Climate engineering jet aircraft dispersions are not "jet exhaust / soot", they are manufactured nanoparticles of elements specifically named in climate engineering patents. Dane Wigington GeoengineeringWatch.org Was hurricane Nicole a random act of nature? Or is there much more to the story? What agendas and objectives might Hurricane Nicole have served for those in power? Can winter weather be · Dane Wigington GeoengineeringWatch.org What aren’t we being told? Is the highly toxic and controversial element graphene being seeded into our skies as part of the ongoing covert climate intervention operations?
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U.S. GAO
gao.gov › products › gao-25-107328
U.S. GAO - Cloud Seeding Technology: Assessing Effectiveness and Other Challenges
GAO identified challenges to the use and development of cloud seeding, including: Reliable information is lacking on the conduct of optimal, effective cloud seeding and its benefits and effects.
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The San Francisco Standard
sfstandard.com › 2026 › 09 › 08 › cloud-seeding-data-centers
Can cloud seeding make people hate data centers less?
2 weeks ago - Rainmaker staffers work on a cloud-seeding drone between test flights. | Source: Alex Goodlett for The Standard ... Tech companies are exploring artificially making it rain to address their water problems. ... Published Sep. 8, 2026at6:00am ... Published Sep. 8, 2026at6:00am · Can drones carrying a few teaspoons of salt solve the public relations crisis around AI data centers? Some are betting that the controversial, 80-year-old practice of cloud seeding can make it rain for data centers — literally. Across the country, the push to build massive data centers to power the AI boom has run into growing resistance from locals and governments, who say the facilities are noisy and consume huge amounts of power and fresh water. The outcry is especially loud in drought-prone California. The Southern California cloud-seeding startup Rainmaker is in talks with Big Tech companies to stimulate rain near data centers and bring fresh water back to the ground, CEO Augustus Doricko told The Standard.
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Eureka
eureka.patsnap.com › excellent-thermal-conductivity › 3d reduced graphene oxide/sio 2 composite for ice nucleation
3D reduced graphene oxide/sio 2 composite for ice nucleation - Eureka | Patsnap
Current silver iodide micro particles used in cloud seeding have raised concerns over its toxicity in different environments; particularly aquatic environments. In addition, although the conventional method of cloud seeding has been shown to ...
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Bloomberg Law
news.bloomberglaw.com › environment-and-energy › how-cloud-seeding-works-and-why-its-controversial-quicktake
How Cloud Seeding Works and Why It’s Controversial: QuickTake
April 18, 2024 - While popular in some countries, including the US, cloud seeding is controversial because it can have unintended consequences such as too much rain and increased pollution. Dubai experienced record rainfall · leading to flooding April 16 after ...
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Grants Pass Tribune
grantspasstribune.com › home › national news › examining cloud seeding in the united states: science, safety, and controversy
Examining Cloud Seeding in the United States: Science, Safety, and Controversy
July 26, 2025 - In terms of safety, no verified incidents have linked cloud seeding operations to weather disasters such as floods, hurricanes, or tornadoes. The process cannot generate storms on its own; it can only enhance precipitation in already-formed ...
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Fritz Energy
fritzenergy.com › climate › the risks of cloud seeding: environmental, ethical, and health concerns explored
The Risks of Cloud Seeding: Environmental, Ethical, and Health Concerns Explored | Fritz Energy
June 8, 2025 - Critics argue that tampering with atmospheric processes could unleash unintended consequences—from ecological imbalance to geopolitical conflict. This article examines the risks of cloud seeding, separating fact from fearmongering and exploring ...
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Bulletin of the Atomic Scientists
thebulletin.org › home › climate change › dodging silver bullets: how cloud seeding could go wrong
Dodging silver bullets: how cloud seeding could go wrong - Bulletin of the Atomic Scientists
August 19, 2022 - While cloud seeding is not a new technology—the first experiments took place in the 1940s—it fell out of favor in the 1980s for being an “unacceptable ethical and environmental hazard.” It is now back on the policy agenda as a climate ...
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Ucsf
chimail.ucsf.edu › home › academics
Cloud Seeding Risks Revealed - UCSF Health Informatics
October 18, 2023 - Cloud seeding risks exposed, revealing unintended weather modification consequences, including altered precipitation patterns, geoengineering concerns, and environmental impacts, sparking debate on climate intervention and atmospheric manipulation.
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Factually
factually.co › which companies offer commercial cloud seeding services
What companies are cloud seeding?
December 13, 2025 - Reports note strong activity in Asia Pacific and national programs in countries such as China, UAE and India, alongside longstanding projects in North America (including university and research programs such as the Desert Research Institute’s cloud‑seeding research) [12] [11] [13]. Market writeups emphasize Asia Pacific commanding a large share in 2024 and new national adoption plans through 2025 [12] [6]. 6. What the sources don’t settle — effectiveness, environmental or legal controversy · The cited vendor and market documents make claims of “moderate, predictable increases” and improved yields with modern targeting [3], but the provided materials are industry, vendor and market‑research oriented; they do not include independent consensus science, detailed environmental impact studies or legal analyses in these excerpts. Available sources do not mention independent peer‑reviewed meta‑analyses or detailed environmental liability rulings on long‑term regional impacts — that information
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The Japan Times
japantimes.co.jp › environment › 2024 › 04 › 18 › earth-science › cloud-seeding-rainfall-controversial
How cloud seeding boosts rainfall — and why that’s controversial - The Japan Times
April 18, 2024 - Other concerns include altering existing weather patterns at a local level, which can lead to undesired conditions such as hail in agriculture areas. WMO experts also warn that chemicals such as silver iodide are toxic, and their use should ...
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Ignitec
ignitec.com › insights › the-hidden-costs-behind-cloud-seeding
The hidden costs behind cloud seeding | Ignitec Product Design Bristol
February 9, 2023 - This being said, cloud seeding is a controversial technology that sceptics caution needs more development and study: What are the consequences of introducing chemicals into the clouds that we get our drinking and bathing water from? How does this affect the natural environment, the plants and animals living there, and the food that we get from it? What happens when wind pushes seeded clouds to an area where it wasn’t intended, not needed, and unauthorised? Can making it rain in one region deprive another of theirs? And if it does, this could cause international conflict (i.e. one nation accuses another of having ‘weaponised the weather’) by violating the Convention on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques (ENMOD) When seeding clouds with dry ice, which is essentially CO2, is that not simply adding more to the greenhouse ...
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Gralon
gralon.com › articles › news-and-media › weather › article-cloud-seeding--what-danger-14095.html
Cloud seeding: what danger?
Even though cloud seeding has been used for more than half a century and has proven its usefulness in certain circumstances, this cloud manipulation technique is controversial. It fulfills humanity's age-old dream of controlling the weather and using it to its advantage in weather-sensitive activities such as agriculture or organizing outdoor events. But it is not without consequences on the environment and the geopolitical balance of the planet. On one hand, silver iodide used to trigger precipitation is among heavy metals and constitutes a toxic substance for aquatic species, which has led scientists to seek alternatives like calcium chloride. On the other hand, we still do not know how to measure and control all the consequences of this technique, including the risk of triggering excessive rainfall and floods or the risk of drying out a neighboring region.
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ResearchGate
researchgate.net › publication › 318821618_Environmental_aspects_of_cloud_seeding
Environmental aspects of cloud seeding
July 1, 2017 - Meanwhile, there are several major difficulties in promoting the seeding technology (Wu et al. 2018), which include the high cost of operation, the risk of pollution (Fisher et al. 2018; Korneev et al.