"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
🚨'Rock candy' technique offers simpler, less costly way to capture C directly from air
U of Toronto engineers have developed a cheap, passive, string-based #DAC system that crystallizes CO₂ like “rock candy,” potentially cutting capital costs by up to 40%.
How it works🧵1/11
Direct air capture has existed for decades, but it’s expensive. Giant fans, complex chemical plants, and energy-intensive regeneration steps drive up costs. That’s the main criticism of today’s DAC industry.
U of Toronto researchers tackled the problem with a simple question:
What if we could let nature do most of the work?
Their answer: evaporative carbonate crystallization, a passive, wind-powered approach.
🚨🗞️Monthly Solar Geoengineering Updates (November Edition)
From the U.S. stratospheric-cooling patent to Global South funding, cautious UK–EU stances, tipping-point modeling & a surge in chemtrail chatter, #SRM captured global attention.
Top 10 SRM Highlights (Nov 2025)🧵1/6:
➡️@MakeSunsets secures its first US patent for stratospheric cooling tech
➡️Climate scientists remain skeptical of SRM, favor research over deployment, per @SZ (Garman newspaper) survey
➡️Royal Society sees SRM’s potential but stresses it can't solve climate change alone
🧵2/
➡️London Protocol reiterates precaution on marine geoengineering deployment
➡️UK reiterates it is “not in favor” of SRM deployment but open to debating regulation
➡️Studies warn SAI may cut protein in staple crops & destabilize yields for coffee, cacao & wine
🚨A new modeling study finds Stratospheric Aerosol Injection (#SAI) could lower risks to many of Earth’s #TippingPoints, but not all.
High-latitude deployment best protects ice sheets & permafrost, while low-latitude deployment favors rainforests & coral reefs.
DETAILS🧵1/14
2/ Tipping elements are highly sensitive to warming.
This study analyzes how different SAI designs (equatorial, mid-latitude, high-latitude & multi-objective strategy) influence the drivers of these tipping systems under SSP2-4.5.
3/ Across most tipping elements, SAI decreases risk relative to continued warming, but magnitude & direction of response are strongly pattern-dependent.
CO₂-driven warming & SAI-driven cooling aren't climatic mirror images - SAI can over- or under-compensate regional changes
🚨New study reveals a major hidden C sink in the deep ocean: ancient talus breccias - piles of broken basalt formed along seafloor faults - can trap & store CO₂ for tens of millions of years, potentially offsetting a significant share of mid-ocean ridge emissions.
DETAILS🧵1/10
2/ Researchers made the discovery while drilling 60-million-year-old seafloor in the South Atlantic.
They found talus breccias containing ~7.5 wt% CO₂ - the highest carbon content ever measured in upper ocean crust, up to *40 times richer than previously sampled basalts.
3/ Why so much C?
These breccias form when steep faults at slow-spreading ridges collapse, creating piles of fractured rock with high natural porosity (~19%).
Over millions of yrs, cold seawater circulates thru rubble & precipitates carbonate minerals, trapping dissolved CO₂
🚨Soil food webs boost carbon retention in farmlands
A new study reveals that simply returning crop residues to fields can supercharge soil food webs, enabling microbes, nematodes & fungi to lock significantly more photosynthetic C into farmland soils.
Details🧵1/8 #CarbonSink
2/ Researchers from the Institute of Applied Ecology, Chinese Academy of Sciences (CAS), used field trials and ¹³C isotope tracing to map how carbon fixed by crops travels into soil and through the soil food web.
3/ FINDINGS:
Returning crop residues (stover) emerged as a key driver:
It increased particulate organic carbon (POC) by ~30.96% & mineral-associated organic carbon (MAOC) by ~11.39% compared with plots where stover was removed.
🚨New research shows how integrating Direct Air Capture (#DAC) with urea production - paired with CO₂ pricing can slash emissions, reach cost parity with fossil-based urea by 2050 & reshape global fertiliser markets through policies like the EU #CBAM.
DETAILS🧵1/9 #CDR
2/ What DAC-urea is?
It's urea fertilizer made with CO₂ pulled directly from the air instead of CO₂ from fossil fuels.
Air-captured CO₂ + green ammonia → urea.
Same fertilizer, but far lower climate impact.
3/Study presents a framework combining process modelling, prospective LCA & TEA to compare DAC-urea with conventional fossil-based urea today & under 2050 climate scenarios, including a cross-country assessment of Denmark’s clean electricity system & Egypt’s more C-intensive grid