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Geoengineering, carbon removal news via @andrewjlockley & team. Also see Geoengineering Google group. Chemtrailers/deniers instablock. RT=/=E
Aug 3 โ€ข 24 tweets โ€ข 7 min read
๐Ÿ“๐Ÿ’ก๐–๐ž๐ž๐ค๐ฅ๐ฒ ๐‚๐ƒ๐‘ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ๐Ÿ’ก๐Ÿ“

๐Ÿ“ฐ Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (28 July - 03 August 2025):

๐Ÿ”—:

๐Ÿงต0/21 Germanyโ€™s 2026 draft budget allocated โ‚ฌ111 million for negative emissions in 2026 and a further โ‚ฌ320 million in subsequent years. A new federal department has also been set up to focus on carbon removal.


1/21linkedin.com/posts/dvne_cdrโ€ฆ
Aug 1 โ€ข 10 tweets โ€ข 3 min read
๐ŸšจHow does #SolarGeoengineering affect air pollution & public health?

New study using a cutting-edge Earth system model shows that #SAI has only modest effects on PMโ‚‚.โ‚… & ozone-related mortality & these impacts are mostly due to climate shifts, not aerosol deposition.๐Ÿงต1/8 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 (Oโ‚ƒ) & fine particulate matter (PMโ‚‚.โ‚…) under future SAI deployment targeting 1.5ยฐC and 1.0ยฐC warming levels.
Jul 27 โ€ข 24 tweets โ€ข 7 min read
๐Ÿ“๐Ÿ’ก๐–๐ž๐ž๐ค๐ฅ๐ฒ ๐‚๐ƒ๐‘ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ๐Ÿ’ก๐Ÿ“

๐Ÿ“ฐ Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (21-27 July 2025):

๐Ÿ”—:

๐Ÿงต0/22 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-securโ€ฆ
Jul 25 โ€ข 9 tweets โ€ข 2 min read
๐ŸšจScientists 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

DETAILS๐Ÿงต1/8 Image 2/ Microbially induced calcite precipitation (MICP) is a technique where microbes precipitate CaCOโ‚ƒ, often used in eco-friendly building materials.

Most MICP uses urease to break down urea, which produces ammonium, a problematic byproduct.
Jul 22 โ€ข 12 tweets โ€ข 4 min read
๐Ÿšจ๐Ÿ—“Carbon Removal Events๐Ÿ—“๐Ÿšจ

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

๐Ÿ”—:

๐Ÿงต1/11 teamup.com/kshqbfhrqkw36sโ€ฆImage EVENTโ€”Food, Ag & Regen Farming + Biotech & Life Sciences Call by 4WARD

๐Ÿ—“23 July 2025 | Online
๐Ÿ”—

2/11circle.4ward.earth/c/events/food-โ€ฆ
Jul 21 โ€ข 12 tweets โ€ข 3 min read
๐ŸšจSolar 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.

๐Ÿงต1/11 Image 2/ SRM often gets touted as cheap even โ€œpennies per tonโ€ 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.
Jul 20 โ€ข 25 tweets โ€ข 7 min read
๐Ÿ“๐Ÿ’ก๐–๐ž๐ž๐ค๐ฅ๐ฒ ๐‚๐ƒ๐‘ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ๐Ÿ’ก๐Ÿ“

๐Ÿ“ฐ Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (14-20 July 2025):

๐Ÿ”—:

๐Ÿงต0/23 Frontier facilitated $1.75M in CDR purchases from Karbonetiq, Limenet & pHathom for buyers including Stripe, Shopify & Google.


1/23frontierclimate.com/writing/summerโ€ฆ
Jul 17 โ€ข 9 tweets โ€ข 2 min read
๐ŸšจGlobal talk on #SolarGeoengineering is heating up but Latin Americaโ€™s barely in the room.

A new study analyzes the #MakeSunsets case in Mexico & shows why Latin America & the Caribbean need urgent, inclusive SRM governance to prevent risks & protect real research.๐Ÿงต1/8 Image 2/ With climate risks growing, solar radiation modification is gaining attention globally.

Yet in the Latin America & the Carribean (LAC) region, it's still a marginal topic, largely absent from political agendas, public debate, and regulatory systems.
Jul 15 โ€ข 18 tweets โ€ข 6 min read
๐Ÿšจ๐Ÿ—“Carbon Removal Events๐Ÿ—“๐Ÿšจ

Here's a list of what's coming up this week (08 July - 21 July 2025) in the field of #CarbonDioxideRemoval:

๐Ÿ”—:

๐Ÿงต1/17 teamup.com/kshqbfhrqkw36sโ€ฆImage EVENTโ€”This is CDR: Divert, Transform, Apply โ€“ How BioForceTech is Removing CO2 by Turning Wastewater Sludge into Aggregate by @openaircollect

๐Ÿ—“15 July 2025 | Online
๐Ÿ”—

2/17lu.ma/4mr8gbc9
Jul 13 โ€ข 25 tweets โ€ข 7 min read
๐Ÿ“๐Ÿ’ก๐–๐ž๐ž๐ค๐ฅ๐ฒ ๐‚๐ƒ๐‘ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ๐Ÿ’ก๐Ÿ“

๐Ÿ“ฐ Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (07-13 July 2025):

๐Ÿ”—:

๐Ÿงต0/23 Frontier signed a $41M deal with Arbor for 116,000 tCOโ‚‚ removals (2028โ€“2030).

1/23
frontierclimate.com/writing/arbor
Jul 11 โ€ข 10 tweets โ€ข 3 min read
๐ŸšจGeorgia Tech researchers have developed a low-cost method to pull COโ‚‚ from the air (#DAC) using cold temperatures and common materials, potentially slashing capture costs to ~$70 per ton and expanding where Direct Air Capture can work. #CDR

DETAILS๐Ÿงต1/9 Image 2/ DAC is a critical tool for fighting climate change, but itโ€™s been too expensive to scale.

Current systems often exceed $200 per ton of COโ‚‚ captured, partly due to the high energy needed to run them.
Jul 9 โ€ข 9 tweets โ€ข 3 min read
๐ŸšจFrom Air to Stone๐Ÿšจ

New study revealed that Kenyan fig trees can literally turn parts of themselves to stone, using microbes to convert internal crystals into limestone-like deposits that lock away CO2, sweeten surrounding soil & still yield fruit. #CarbonRemoval

DETAILS๐Ÿงต1/8 Image 2/ Some Kenyan fig trees, like Ficus wakefieldii, store COโ‚‚ not just as organic matter (wood/leaves) but also as calcium carbonate (CaCOโ‚ƒ) - the same mineral as chalk or limestone.

This process is called the oxalate-carbonate pathway (OCP).
Jul 8 โ€ข 16 tweets โ€ข 6 min read
๐Ÿšจ๐Ÿ—“Carbon Removal Events๐Ÿ—“๐Ÿšจ

Here's a list of what's coming up this week (08 July - 14 July 2025) in the field of #CarbonDioxideRemoval:

๐Ÿ”—:

๐Ÿงต1/15 teamup.com/kshqbfhrqkw36sโ€ฆImage EVENTโ€”5th Brazilian Congress of Remineralizers Conference

๐Ÿ—“8-11 July 2025 | Brazil
๐Ÿ”—

2/15remineralize.org/2025/01/5th-brโ€ฆ
Jul 6 โ€ข 22 tweets โ€ข 6 min read
๐Ÿ“๐Ÿ’ก๐–๐ž๐ž๐ค๐ฅ๐ฒ ๐‚๐ƒ๐‘ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ๐Ÿ’ก๐Ÿ“

๐Ÿ“ฐ Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (30 June - 06 July 2025):

๐Ÿ”—:

๐Ÿงต0/19 @Climeworks raised $162 million Seriesโ€ฏE to scale Generationโ€‘3 direct air capture, cut costs to $400โ€“600/t, and grow its carbon removal portfolio.

1/19
climeworks.com/press-release/โ€ฆ
Jul 2 โ€ข 10 tweets โ€ข 3 min read
๐ŸšจWhat if we bet too much on future carbon removal tech and it doesnโ€™t deliver?

New study shows that over-relying on #CDR like DACCS & BECCS could let fossil fuel emissions continue longer, delay action, and raise costs later.

Key findings๐Ÿงต1/9 Image 2/ Many net-zero plans assume large-scale CDR. But techs like direct air capture (DACCS) & bioenergy with CCS (BECCS) are tiny today and scaling them is risky due to land, energy & cost barriers.
Jul 1 โ€ข 12 tweets โ€ข 4 min read
๐Ÿšจ๐Ÿ—“Carbon Removal Events๐Ÿ—“๐Ÿšจ

Here's a list of what's coming up this week (01 July - 07 July 2025) in the field of #CarbonDioxideRemoval:

๐Ÿ”—:

๐Ÿงต1/11 teamup.com/kshqbfhrqkw36sโ€ฆImage EVENTโ€”This is CDR - Embedding CDR: Unlocking Scale Through Industrial Integration with Cara Maesano, PhD. by @openaircollect

๐Ÿ—“01 July 2025 | Online
๐Ÿ”—

2/11lu.ma/ilq6xg6j
Jun 16 โ€ข 13 tweets โ€ข 5 min read
๐ŸšจTired of drowning in climate science papers?

๐ŸŽง Remove & Reflect Podcast does the digging for youโ€”turning research & reports into short, sharp episodes on #CDR & #SRM.

YouTube:youtube.com/@removeandreflโ€ฆ

Spotify:open.spotify.com/show/0dxuwkOuHโ€ฆ

Check out some must-listen episodes:๐Ÿงต1/12 This episode dives into a radical proposal: using a buried nuclear explosion on the seafloor to break up basalt & speed up carbon removal via Enhanced Rock Weathering. The goal? Sequester 30 years of global CO2.

2/12
Jun 15 โ€ข 20 tweets โ€ข 6 min read
๐Ÿ“๐Ÿ’ก๐–๐ž๐ž๐ค๐ฅ๐ฒ ๐‚๐ƒ๐‘ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ๐Ÿ’ก๐Ÿ“

๐Ÿ“ฐ Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (09 June - 15 June 2025):

๐Ÿ”—:

๐Ÿงต0/17 @InSoilClimate secured its largest funding to date through a โ‚ฌ100 million agreement with Key Carbon, accelerating regenerative agriculture and carbon credit generation across Europe.

1/17
insoil.com/blog/2025/06/1โ€ฆ
Jun 11 โ€ข 11 tweets โ€ข 4 min read
๐ŸšจA new study [preprint] shows that injecting sulfur at 50km could make #SolarGeoengineering much safer.

It cools the planet more effectively, speeds ozone recovery & avoids stratospheric disruptions. This could be done using a fleet of clean, reusable H2 rockets.

DETAILS๐Ÿงต1/10 Image 2/ SAI involves spraying SOโ‚‚ into stratosphere, where it forms aerosols that reflect sunlightโ€”cooling Earth. It mimics volcanic eruptions like Mt. Pinatubo (1991), which temporarily cooled the planet.

But current โ€œSAI modelsโ€ inject SO2 at a rate of 10 Tg/yr at ~25km altitude.
Jun 8 โ€ข 24 tweets โ€ข 7 min read
๐Ÿ“๐Ÿ’ก๐–๐ž๐ž๐ค๐ฅ๐ฒ ๐‚๐ƒ๐‘ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ๐Ÿ’ก๐Ÿ“

๐Ÿ“ฐ Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (02 June - 08 June 2025):

๐Ÿ”—:

๐Ÿงต0/21 @capture_air raised $50M in Series A funding to scale its California-based DAC tech.

1/21
carbonherald.com/aircapture-secโ€ฆ
Jun 6 โ€ข 9 tweets โ€ข 3 min read
๐ŸšจA new study has revealed for the first time that ancient carbon, stored in landscapes for thousands of years or more, can find its way back to the atmosphere as COโ‚‚ is released from the surfaces of rivers at a rate of 1.2 billion tonnes per year.

Details๐Ÿงต1/8 Image 2/ To understand the true source of river COโ‚‚, researchers compiled a global dataset of 1,195 radiocarbon measurements of dissolved inorganic carbon (DIC), COโ‚‚ & CHโ‚„ from rivers & streams.

This let them determine whether the emitted carbon was modernโ€”or much older. Image