@Isometric_HQ expanded into Environmental Attribute Certificates, becoming the first certifier to support CDR, superpollutant reduction, and EACs on a single registry. isometric.com/writing-articl…
Chestnut Carbon doubled its footprint in Southeast U.S. to nearly 70,000 acres of restored forests. prnewswire.com/news-releases/…
Gold Standard has launched its first methodology for biochar-based CDR. Consultation closes: 22 May 2026 goldstandard.org/consultations/…
The UpLink–World Economic Forum Innovation Challenge is open for CDR startups. Applications close 4 June 2026. uplink.weforum.org/systems-indust…
Italy could reach net-zero by 2050 via CDR scale-up, per new @CarbonGap & B3 Carbon report. carbongap.org/deploying-cdr-…
CO2RE published a report on the challenges of scaling up CDR across the UK, EU, US and beyond & how they can be addressed. co2re.org/publication/sc…
Report by @CarbonGap and Deloitte North and South Europe (NSE) highlighted untapped CDR potential in wastewater, concrete, and mining waste sectors carbongap.org/new-report-hig…
@xprize Carbon Removal released its Post-Prize Impact Report, highlighting major progress like 2,800+ jobs created, 243,552 tonnes of CO₂ removed, and over $3.3B in capital mobilized. xprize.org/news/post-priz…
@cdr_fyi noted gaps between projected vs real CDR performance in new article. cdr.fyi/blog/durable-c…
🚨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
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.
🚨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.
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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.
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.
🚨🗞️Monthly Solar Geoengineering Updates (March'26 Edition)🗞️🚨
From UN review of #SRM tech & its human rights impacts, to US organizations resisting SRM bans, plus new tools & research awards – SRM headlines you need to know from the past month:🧵1/13
1️⃣ @OHCHR_MENA seeks input on climate technologies - The UN Human Rights Office is collecting submissions on how SRM & CDR may impact human rights, with a report due later this year.
2/13
2️⃣ US National Security Framing – ACCF report urges federal research and international governance to prevent rivals from gaining strategic advantage.
🚨Direct air capture (#DAC) using amine-based sorbents is one of the "most promising ways" to remove CO₂, but a core challenge remains: the materials degrade over time, raising costs and limiting scale.
A new study examines why that happens and how to fix it.🧵1/12
2/ Degradation here means any chemical or physical change that reduces CO₂ uptake or increases energy needed for regeneration.
Over time, even small losses compound, turning a promising material into a costly bottleneck.
3/ The paper highlights that degradation is not a single process.
It emerges from a combination of oxidative, thermal, and environmental pathways, each interacting with the sorbent’s molecular structure in different ways.
🚨New research from WashU shows that diamond dust, long proposed as an ideal solar geoengineering (#SRM) material for #SAI, may lose much of its cooling potential when real-world chemistry & manufacturing constraints are taken into account.
DETAILS🧵1/11
2/ Solar geoengineering, particularly stratospheric aerosol injection (#SAI), seeks to mimic volcanic cooling by dispersing reflective particles into the upper atmosphere, reducing incoming solar radiation and temporarily offsetting warming.
3/ Sulfate aerosols (from volcano-like approaches) can cool the planet, but they come with risks: acid rain, ozone damage, and health impacts.
🚨Where should Direct Air Capture (#DAC) be deployed to scale carbon removal?
New research shows: costs are driven less by the technology itself and more by location, climate, and energy systems, making DAC a fundamentally geo-dependent solution.
Details🧵1/10
2/ DAC needs to scale to 0.5–5 GtCO₂/year by 2050, yet current capacity is ~0.00004 Gt.
Scaling requires massive cost reductions, and smart siting.
3/ The study evaluates two leading approaches:
• Solid sorbent DAC (S-DAC)
• Liquid solvent DAC (L-DAC)
Using global, high-resolution data on weather and renewable energy availability.