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Geoengineering Info Profile picture
@geoengineering1
May 17 • 3 tweets • 7 min read • Read on X
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (11 May - 17 May 2026):

📺:

🧵1/
Crew Carbon raised $25M to scale wastewater treatment and CO2 removal tech.
spglobal.com/energy/en/news…

Green Finance Institute launched CDR Catalyst, unlocking $1M+ loan financing for Restord’s UK biochar project.
restord.earth/news/restord-s…

Planet Savers secured ¥100M in grant funding from Mitsui’s Co-creation Fund.
mitsui.com/jp/en/topics/2…

@inplanet_earth achieved a second verified credits issuance milestone for its ERW project in Brazil.
dispatch.com/press-release/…

UK Department for Energy Security and Net Zero selected 15 DAC projects for £55M in pilot funding.
gasworld.com/story/desnz-se…

Re. green issued its first 36,877 Verra-verified carbon removal credits from restored forests in Bahia.
linkedin.com/posts/congratu…

Government of Meghalaya established first community biochar unit in Northeast India to enhance soil health and CDR.
biochartoday.com/news/governmen…

@CascadeClimate launched the Bedrock Initiative to scale ERW research globally.
cascadeclimate.org/bedrock-initia…

Frontier approved Rainbow as a carbon credit issuer for eligible CDR pathways.
rainbowstandard.io/news/frontier-…

Frontier Infrastructure Holding secured validation and expanded future CDR credit sales for its biomass removal project.
prnewswire.com/news-releases/…

New Zealand updated VCM guidance and launched a framework for assessing novel carbon removals.
environment.govt.nz/news/new-tools…

@Isometric_HQ’s Mangrove Restoration Protocol became the first blue carbon protocol approved for CCP-labelled credits.
linkedin.com/posts/isometri…

@CO2Council released a roadmap to scale carbon removal investment in Latin America.
carbonbusinesscouncil.org/news/latam-inv…

Wren launched its 2026 RFP, offering up to $500K for ARR, blue carbon, and methane reduction projects. Deadline: 30 June 2026
wren.co/blog/2026-requ…

The Clean Energy Ministerial CCUS Initiative and Mission Innovation CDR launched Carbon Management Project Awards for CCUS and CDR projects. Submission deadline: 07 June 2026
cleanenergyministerial.org/call-for-nomin…

The European Commission has opened a consultation on draft CBAM rules that would recognise Article 6 credits when calculating the carbon price paid in exporting countries. Deadline: 10 June 2026
ec.europa.eu/info/law/bette…

Ocean Conservancy and partners released recommendations for mCDR field experiments.
oceanconservancy.org/newsroom/press…

@ClimeFiHQ released a report on corporate net-zero claims and carbon removals.
climefi.com/reports/the-gu…

Abatable released a new whitepaper on building resilient carbon removal portfolios.
landing.abatable.com/building-a-res…

@RockyMtnInst identified three emerging trends driving CDR scale-up beyond voluntary credits.
rmi.org/not-just-volun…

@CRIAEarth and BioFlux released a white paper highlighting biochar’s large-scale CDR potential in India.
…9-447c-a87c-c176b5767f20.usrfiles.com/ugd/098df0_9d0…
For more updates, subscribe to the Carbon Removal Updates Substack Newsletter:


"Unroll" @threadreaderappcarbonremovalupdates.substack.com

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More from @geoengineering1

Geoengineering Info Profile picture
May 14
🚨Greenhouses can grow food in extreme climates, but they often depend on fossil-derived CO₂ inputs to maximize crop yields.

New study investigates whether Direct Air Capture (#DAC) could replace those emissions-intensive CO₂ sources by capturing C directly from air.🧵1/13 Image
2/ Researchers modeled a 1-ha sealed high-tech greenhouse in Jeddah, Saudi Arabia producing cherry tomatoes & lettuce under hot-arid conditions.

The system maintained ~1000ppm CO₂ conc, which are required to sustain high crop productivity in climate-controlled desert agri. Image
3/ The study evaluated two adsorption-based DAC systems:
• temperature-vacuum swing adsorption (TVSA)
• moisture-swing adsorption (MSA)

Both were benchmarked against conventional trucked liquid CO₂ enrichment currently used in commercial greenhouse operations
Read 15 tweets
Geoengineering Info Profile picture
May 8
🚨Monthly Solar Geoengineering Updates (April'2026)🚨

From EU calls for an #SRM deployment moratorium & WHO-linked health-centered governance report, to Stardust publishing its own SRM rules, key SRM headlines you need to know from past month:
🔗

🧵0/12 …largeoengineeringupdates.substack.com/p/monthly-sola…Image
Top 10 SRM Updates from April 2026

1️⃣ Stardust releases SRM “guiding principles”:

The private SRM company publishes voluntary rules and safety guidelines, but experts raise concerns over transparency, unknown aerosols, and private control of planetary-scale interventions.

1/12 Image
2️⃣ WHO-linked report calls for health-centered SRM governance:

A pre-print urges SRM governance centred on human health, equity, and Global South inclusion, stressing SRM must never replace emissions cuts (“non-substitution” principle).

2/12 Image
Read 14 tweets
Geoengineering Info Profile picture
May 7
🚨Is direct air capture (#DAC) really worth the investment?

A new Nature Climate Change study shows that investing in wind & solar delivers 2-3× greater combined climate + health benefits than direct air capture across most U.S. regions, under the same budget.

Details🧵1/11 Image
2/ DAC is often promoted as essential for net-zero, removing CO₂ directly from the atm. But most studies assess it in isolation, asking: “Does it work?”

This study asks a policy-relevant question:
“What are we giving up by funding DAC instead of alternatives?”
3/ Researchers modelled cost-equivalent investments across 22 U.S. regions (2020–2050), comparing:

Direct Air Capture vs Utility-scale wind & solar

Critically, they evaluated CO₂ reductions + air pollution + health impacts. Image
Read 13 tweets
Geoengineering Info Profile picture
Apr 30
🚨What happens to tropical rainforests as CO₂ rises?

New research shows higher CO₂ boosts tree growth & C uptake by pushing roots to aggressively mine scarce phosphorus.

This strengthens the C sink now, but depletes nutrients, ultimately limiting long-term C storage.🧵1/11 Image
2/ Scientists tested this in the Amazon by exposing forest patches to higher CO₂ (future-like conditions) and tracking how trees, roots, and soils responded over time. Image
3/ Step 1: More CO₂ → faster photosynthesis

Trees produce more sugars, grow faster, and pull more CO₂ out of the air.

This is the short-term “carbon sink boost.”
Read 12 tweets
Geoengineering Info Profile picture
Apr 22
🚨Green roofs + enhanced rock weathering (#ERW) could turn cities into carbon sinks.

A new assessment finds Europe’s rooftops could remove tens of millions of tonnes of CO₂ by 2060, with global potential reaching hundreds of MtCO₂/yr under ideal conditions.

Details🧵1/12 Image
2/ The work is a conceptual, literature-based assessment combined with geochemical scaling.

It estimates CO₂ removal using theoretical maximum reactivity (100% mineral conversion) and extrapolates across urban roof availability in Europe and globally.
3/ Roof availability is a key input:

The study uses estimates that roofs cover ~30–32% of urban land area, and up to ~50% of impervious surfaces in dense cities, highlighting a large, currently underused surface for carbon removal deployment. Image
Read 14 tweets
Geoengineering Info Profile picture
Apr 16
🚨A new study details that the climate value of algae & cyanobacteria lies not in CO₂ uptake alone, but in their capacity to generate long-lived, chemically recalcitrant C compounds, such as algaenan & carbonates that may contribute to durable sequestration pathways.

🧵1/11 Image
2/ The study adopts a conceptual synthesis framework, integrating biochemical & geochemical evidence to examine carbon fate post-photosynthetic fixation, moving beyond uptake rates to study the thermodynamic and structural persistence of biogenic carbon. Image
3/ It constructs a functional distinction between:

1) Labile carbon fractions, which are rapidly cycled through microbial respiration

2) Recalcitrant fractions, which resist degradation & contribute to long-term carbon storage across terrestrial & marine systems.
Read 12 tweets

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