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Aug 5 12 tweets 4 min read Read on X
🚨New research out on US public perceptions of #SolarGeoengineering:

More Americans oppose SRM research than support it, and 1 in 5 believe government-led atmospheric modification is already underway.

DETAILS🧵1/11 Image
2/ Using 64 interviews, 10 focus groups, and a survey of 3,076 Americans, the study found strong initial rejection of solar radiation modification (#SRM) as a research priority.

Skepticism, fear of unintended consequences, and concern over “playing God” were dominant themes. Image
3/ Only 32.6% supported further SRM research. A notable 43.7% opposed it. For comparison, support was ~80% in similar studies from a decade ago. Enthusiastic support is now virtually nonexistent in qualitative responses. Image
4/ SRM remains unfamiliar to most: 57.5% of survey respondents said it was entirely new to them. But once introduced, many respondents voiced instinctive rejection. Strong opposition was often driven by moral concerns and distrust in scientific overreach. Image
5/ When support for research did exist, it was reluctant and conditional. People expressed the need for more data before endorsing deployment.

Crucially, 71% preferred SRM research to be conducted by universities, not governments or companies. Image
6/ Belief in ongoing geoengineering is no longer fringe. 20.6% of Americans said it's somewhat or completely true that the US government is already putting chemicals into the atmosphere to counter global warming. 49.6% were unsure. Image
Image
7/ This belief is not best understood as misinformation. The authors introduce the concept of “para-environmentalism” - a permutation of environmental concern, rooted in skepticism of elite institutions, that blends conspiratorial and ecological anxieties. Image
8/ Chemtrail beliefs and weather modification suspicions clustered more around younger, female, conservative, and less-educated respondents.

But uncertainty spanned all political affiliations, suggesting public confusion more than ideology. Image
9/ Focus group quotes show that distrust in environmental governance fuels para-environmentalism.

Participants cited failures in recycling, lack of transparency in policy, and “feeling manipulated” by elites - undermining trust in any new intervention.
10/ The study critiques the “deficit model” of public engagement, i.e., simply feeding the public more facts. Instead, it calls for two-way dialogue, empathetic listening, and locally grounded education to address both cognitive and emotional concerns.
📝For more details, read the study entitled "Public concerns about solar geoengineering research in the United States" here:


🧵11/11 #SRM #SolarGeoengineeringnature.com/articles/s4324…
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More from @geoengineering1

Aug 3
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (28 July - 03 August 2025):

🔗:

🧵0/21
Germany’s 2026 draft budget allocated €111 million for negative emissions in 2026 and a further €320 million in subsequent years. A new federal department has also been set up to focus on carbon removal.


1/21linkedin.com/posts/dvne_cdr…
@HomeworldBio awarded ~$1.4M to 11 GGR projects via its Garden Grants, backing innovations like methane-eating microbes and enhanced rock weathering.


2/21homeworld.bio/blog/announcin…
Read 24 tweets
Aug 1
🚨How does #SolarGeoengineering affect air pollution & public health?

New study using a cutting-edge Earth system model shows that #SAI has only modest effects on PM₂.₅ & ozone-related mortality & these impacts are mostly due to climate shifts, not aerosol deposition.🧵1/8 Image
2/ Using CESM2-WACCM6 simulations across three scenarios (SSP2-4.5 baseline, ARISE-SAI-1.5, ARISE-SAI-1.0), the study quantifies global mortality attributable to ozone (O₃) & fine particulate matter (PM₂.₅) under future SAI deployment targeting 1.5°C and 1.0°C warming levels.
3/ Findings:

In the ARISE-SAI-1.5 scenario, maintaining global mean temp at 1.5°C above pre-industrial levels via SAI results in:

- 1.26% reduction in ozone-related mortality

- 0.86% increase in PM₂.₅-related mortality during 2060–2069, relative to SSP2-4.5. Image
Image
Read 10 tweets
Jul 27
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (21-27 July 2025):

🔗:

🧵0/22
Chestnut Carbon secured up to $210M in non-recourse financing, led by J.P. Morgan for its afforestation project, marking a first-of-its-kind deal in the US carbon removal space.


1/22carbonherald.com/chestnut-secur…
@MissionZeroTech won £6M from the UK government to advance design work for a DAC-enabled SAF plant in Cumbria, building on £1.38M in prior funding.


2/22missionzero.tech/lab-notes/uk-g…
Read 24 tweets
Jul 25
🚨Scientists have discovered a common soil bacterium, Bacillus megaterium, that can rapidly remove CO2 from the atmosphere by transforming it into solid limestone (calcium carbonate) within 24 hours, without creating toxic byproducts.
#CDR #CarbonMineralization

DETAILS🧵1/8 Image
2/ Microbially induced calcite precipitation (MICP) is a technique where microbes precipitate CaCO₃, often used in eco-friendly building materials.

Most MICP uses urease to break down urea, which produces ammonium, a problematic byproduct.
3/ Bacillus megaterium is unique in a sense, it contains both urease and carbonic anhydrase (CA) enzymes. The latter allows it to fix CO₂ directly without needing urea.

But which pathway dominates? This study investigated that. Image
Read 9 tweets
Jul 22
🚨🗓Carbon Removal Events🗓🚨

Here's a list of what's coming up this week (22 July - 28 July 2025) in the field of #CarbonDioxideRemoval:

🔗:

🧵1/11 teamup.com/kshqbfhrqkw36s…Image
EVENT—Food, Ag & Regen Farming + Biotech & Life Sciences Call by 4WARD

🗓23 July 2025 | Online
🔗

2/11circle.4ward.earth/c/events/food-…
EVENT—The Future of Carbon: Technology vs. Nature-based Solutions by Centre for Climate and Business Solutions

🗓23 July 2025 | British Columbia
🔗

3/11lu.ma/gk1jsg18
Read 12 tweets
Jul 21
🚨Solar Geoengineering (#SRM) may seem cheap (~$18B/yr) to cool the planet, but when you factor in societal risks, political instability & sudden climate rebounds, the true cost may far exceed technical estimates from both moral & practical standpoints, says a new study.

🧵1/11 Image
2/ SRM often gets touted as cheap even “pennies per ton” compared to the hundreds of $/ton needed for large-scale CDR.

But these estimates usually ignore the real-world costs of deploying SRM in a politically fractured and climate-damaged world.
3/ The authors outline four cost domains that traditional SRM estimates often miss:

1️⃣ Compensation for harms
2️⃣ International coordination
3️⃣ Domestic political feasibility
4⃣ Termination Shock

Each could add major financial & political costs. Details below: Image
Read 12 tweets

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