"They naturally extract CO2 from the air and use it as feed. The more CO2 plants absorb, the less CO2 remains trapped in the atmosphere." 2/6
As plants decompose, CO2
is released back to the air
"If left alone, plants are eaten by other organisms and releasing the carbon back to the carbon cycle within months."
3/6
Anoxic conditions slow decomposition
"In anoxic waters, plants decompose extremely slowly, effectively storing the carbon much longer." 4/6
The Black Sea is the ideal location
"It is the largest anoxic body of water on earth, 2km deep, surrounded by fertile lands. The Black Sea is the optimal environment allowing affordable, environmentally safe, gigaton scale #CarbonRemoval in this decade." 5/6
🚨What is the economic value of the ocean’s natural #CDR?
New study estimates the ocean removes ~1.13 billion tCO₂/yr, creating $2.32 trillion in annual Blue C Wealth.
Over 90% of this value comes from open-ocean biological processes, rather than coastal ecosystems.🧵1/11
2/ Blue carbon has traditionally referred to carbon captured by mangroves, seagrasses, and salt marshes.
This study expands the concept by including the Biological Carbon Pump (BCP), where phytoplankton transport carbon from surface waters into the deep ocean.
3/ The researchers introduce Blue Carbon Wealth (BCW), an economic measure of marine carbon removal.
By combining sequestration estimates with country-specific social cost of carbon values, they treat blue carbon as a component of national natural wealth.
New review argues that integrating Direct Air Capture into buildings could improve indoor air quality, reduce HVAC energy use by 20-60% & cut capture costs to ~$200/tCO₂, transforming buildings from energy users into distributed C sinks🧵1/12
2/Buildings generate ~37% of global CO₂ emissions, while HVAC systems consume ~40% of building energy.
Most of this stems from ventilation needed to maintain indoor air quality.
Building-integrated DAC enables CDR while greatly reducing the need for energy-intensive fresh air.
That higher concentration boosts capture performance, increasing adsorption capacity by around 10-20%, while improving separation efficiency and reducing energy penalties
🚨Can bipolar membrane electrodialysis (BMED) make #OAE commercially viable?
New study evaluates techno-economics of producing alkalinity from desalination brine & finds that commercial success depends far more on C markets & financing than on incremental tech improvements🧵1/11
2/ OAE works by increasing the ocean's alkalinity, allowing seawater to absorb and store more atmospheric CO₂ while helping counter ocean acidification.
3/ So, the proposed BMED system converts desalination brine into ~1,993 t/yr of NaOH for OAE while simultaneously producing ~1,768 t/yr of HCl as a marketable by-product.
The plant was modelled to remove ~878 tCO₂ annually, creating two potential revenue streams.
🚨Monthly Solar Geoengineering Updates (June'2026)🚨
From PARLATINO's SRM declaration to Global South funding, African initiatives, European public opinion & Arctic sea-ice findings, here are June 2026's key #SRM headlines:🧵0/12
Latin American and Caribbean lawmakers backed sci-based, multilateral SRM governance & began work on a regional framework law on climate change governance with dedicated geoengineering provisions.
2️⃣ @DegreesNGO awards seven SRM grants
New Expansion Grants of up to £200,000 each will strengthen Global South SRM research, capacity, and policy expertise.
🚨Which #CDR techs will actually get the world to net zero? New study finds there's no silver bullet.
BECCS leads engineered removals, DACCS complements it & forests provide crucial early removals, with land, biomass, energy & C prices ultimately deciding the winning mix.🧵1/11
2/ Researchers coupled two integrated assessment models, TIAM-FR (energy system) and GLOBIOM-G4M (land-use system), to examine how land, biomass, and energy interact in delivering CDR under both 2°C and 1.5°C climate scenarios.
3/ The study finds that dedicated energy crops become a major biomass source, supplying 54-55 EJ of bioenergy annually while covering around 215 million hectares of land by the net-zero year.
Biomass becomes a cornerstone of future low-carbon energy systems.
🚨Earth has a mysterious triple symmetry that may influence its climate
New research finds that a circle running along the 27° east & 153° west meridians divides the globe into 2 halves with equal reflectivity & this may have implications for #SolarGeoengineering schemes.🧵1/10
2/ This study matters bcz Earth's reflectivity (albedo) controls how much solar energy stays in the climate system.
For decades, researchers knew the NH & SHemispheres reflect similar amounts of sunlight. But nobody had seriously looked for similar patterns across longitude.
3/ Using 25 years of satellite observations, researchers discovered that the 27°E meridian uniquely splits Earth into eastern & western hemispheres with almost identical reflected sunlight. Not 20°E. Not 40°E. Just one remarkably precise divide.