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Frauke Kracke @fraukekracke.bsky.social · Aug 26

Resources for those tracking the science:

🔗 Carbon to Sea’s 2025 annual convening takeaways: www.carbontosea.org/2025/07/28/2...

🔗 @Ocean_Visions OAE Field Trials database: oceanvisions.org/roadmaps/oae...

🔗 @theNASEM report on Ocean CDR: nap.nationalacademies.org/catalog/2627...

Proceedings of the 2025 Carbon to Sea Annual Convening - Carbon to Sea Initiative

Over the past few months since the 2025 Annual Convening, the Carbon to Sea team has been compiling a comprehensive report of the key insights shared across three days of meaningful conversations, pre...

www.carbontosea.org

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Frauke Kracke @fraukekracke.bsky.social · Aug 26

Importantly, Planetary will make all collected data and metadata on efficacy verification as well as environmental monitoring available to the public following Carbon to Sea’s data management protocol.

www.carbontosea.org/oae-data-pro...

OAE Data Protocol, Version 1.0.0 - Carbon to Sea Initiative

The OAE Data Management Protocol outlines recommendations for producing consistent data and metadata for Ocean Alkalinity Enhancement (OAE) research projects. With broad adoption, this protocol will m...

www.carbontosea.org

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Frauke Kracke @fraukekracke.bsky.social · Aug 26

Today, Frontier announced an offtake agreement with Planetary, the team behind the world’s first OAE verified tons. Their work is part of a growing set of global projects scaling responsible testing of OAE under real-world conditions.
frontierclimate.com/writing/plan...

Frontier buyers sign $31M deal with Planetary to advance ocean alkalinity enhancement

Frontier has facilitated offtake agreements with Planetary, a company that removes atmospheric CO₂ and reduces local ocean acidity by adding dissolved alkaline minerals to seawater.

frontierclimate.com

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Frauke Kracke @fraukekracke.bsky.social · Aug 26

Evidence to date — from mesocosms, oyster hatchery interventions, and > a dozen controlled coastal pilots — shows ability to control pH within safe bounds, measurable CO₂ drawdown, and no acute harm to local biota for alkalinity addition at relevant rates.

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Frauke Kracke @fraukekracke.bsky.social · Aug 26

OAE raises alkalinity by adding minerals such as Ca(OH)₂, and Mg(OH)₂. This shifts carbonate chemistry, allowing for additional CO₂ uptake while locally providing relief from acidification.

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Frauke Kracke @fraukekracke.bsky.social · Aug 26

The ocean absorbs ~25% of human CO₂ emissions. That uptake is acidifying surface waters, stressing calcifiers, and weakening the ocean’s carbon sink.

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Frauke Kracke @fraukekracke.bsky.social · Aug 26

Quick state of play on Ocean Alkalinity Enhancement (OAE): where the science stands, what recent trials show, and why it warrants careful, scaled testing. 🧵

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Reposted by Frauke Kracke

Eos @eos.org · Aug 20

Today is Day 2 of the public hearing on the EPA’s reconsideration of the 2009 endangerment finding, the key ruling underpinning U.S. greenhouse gas regulations. 🧪

Testimonies start at the top of the hour, and we’re following along: 👇🧵

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Reposted by Frauke Kracke

Zeke Hausfather @hausfath.bsky.social · Aug 14

The recent DOE climate science report misrepresents the work of many researchers. Carbon Brief asked those cited to review the parts of the report where their work was used, and we collectively found 100+ misleading or false statements: interactive.carbonbr...

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Frauke Kracke @fraukekracke.bsky.social · Aug 1

absolute insanity - the new normal.

Dr. Jonathan Foley @globalecoguy.bsky.social · Aug 1

Let’s go back to the 1800s.
Let’s go back to burning rocks.
Let’s go back to more expensive energy.
Let’s go back to choking, dirty air.
Let’s go back to black lung disease.

Brought to you by Trump’s Department of Backward Energy.

Frauke Kracke @fraukekracke.bsky.social · Jul 14

Karbonetiq: uses a low-cost, passive aeration system to mineralize industrial waste into Mg and Ca carbonates.

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Frauke Kracke @fraukekracke.bsky.social · Jul 14

pHathom Technologies, Inc: develops a storage solution for concentrated CO2 streams (e.g., for biogenic emissions) based on limestone dissolution, storing the CO2 safely and durably in the ocean.

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Frauke Kracke @fraukekracke.bsky.social · Jul 14

Limenet: develops an electric kiln for production of carbon-free lime for CDR approaches such as ocean alkalinity enhancement, mineral looping DAC or surficial mineralization.

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Frauke Kracke @fraukekracke.bsky.social · Jul 14

Excited to announce another set of Frontier prepurchases! The field of carbon removal is maturing and we have selected three companies that work on compelling approaches to high scale, low cost approaches to CDR by leveraging abundant, alkaline materials:

frontierclimate.com/writing/summ...

Frontier boosts ocean liming and surficial mineralization startups in fifth round of prepurchases

Frontier has facilitated $1.75 million of carbon removal purchases from Karbonetiq (United States), Limenet (Italy), and pHathom (Canada) on behalf of buyers Stripe, Shopify, and Google. Frontier buye...

frontierclimate.com

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Reposted by Frauke Kracke

Energy Innovation @energyinnovation.org · May 19

🔌💡 Our @silviomarcacci.bsky.social's recent piece analyzes how the #energy provisions of the “One Big Beautiful Bill” would cost our #economy years of growth with 830,000 lost jobs, $1.1 trillion less GDP, and 50 percent higher power prices 👇 www.forbes.com/sites/energy... #energysky #greensky

$1 Trillion In Economic Damage From U.S. House’s Reconciliation Bill

Energy provisions of the “One Big Beautiful Bill” would cost our economy years of growth with 830,000 lost jobs, $1.1 trillion less GDP, and 50% higher power prices.

www.forbes.com

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Reposted by Frauke Kracke

Dr. Jonathan Foley @globalecoguy.bsky.social · Apr 24

Hey! Project Drawdown is hiring a Director of Business, Philanthropy, and Investor Partnerships!

Important role. Amazing team. Remote position, anywhere in U.S. Excellent salary and benefits.

Come join us!

drawdown.org/careers/dire...

Director of Business, Philanthropy, and Investor Partnerships

Our mission is to help the world reach “Drawdown" as quickly, safely, and equitably as possible.

drawdown.org

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Frauke Kracke @fraukekracke.bsky.social · Apr 1

Adding carbon removal to a waste to energy plant is a no brainer - excited about this first project with Hafslund Celsio!

Scott Litzelman @scottlitz.bsky.social · Apr 1

Hafslund Celsio is building the world's first carbon removal retrofit at a waste-to-energy facility, enabled by a $30M offtake with Frontier buyers. Writ large, this approach could remove 400 million tons of CO2 per year by 2050. frontierclimate.com/writing/hafs...

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Frauke Kracke @fraukekracke.bsky.social · Feb 28

This is all so f**ed. Hope grantees will be able to keep their funding and progress the science! Hold on!

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Frauke Kracke @fraukekracke.bsky.social · Feb 27

and if you speak german: www.linkedin.com/pulse/wie-ei...

Wie ein Münchner Unternehmen die Energieherausforderung der direkten CO2-Abscheidung meistert

Wir wissen, dass wir neben der Emissionsreduktion bis 2050 jährlich 5-10 Gigatonnen CO2 aus der Atmosphäre entfernen müssen, um die schlimmsten Auswirkungen des Klimawandels zu verhindern. Doch viele ...

www.linkedin.com

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Frauke Kracke @fraukekracke.bsky.social · Feb 27

Frontier has facilitated its first electrochemical DAC offtake with Phlair.

Phlair has the potential to deliver ultra low-cost DAC for a few reasons—one being that their approach is explicitly designed to work with cheap intermittent energy sources like solar.

frontierclimate.com/writing/phlair

Frontier buyers sign first electrochemical DAC deal with Phlair

Frontier buyers will pay Phlair $30.6 million to remove 47,000 tons of CO₂ between 2027 and 2030.

frontierclimate.com

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Reposted by Frauke Kracke

Olivier Sulpis @sulpis.bsky.social · Feb 26

🚨Postdoc Offer🚨

Fully funded 2-year research position at Paris or Aix-en-Provence: your choice!

The project aims to predict OAE feedbacks and environmental impacts in the ocean interior, in particular at the seabed.

See job ad : nuage.osupytheas.fr/s/4zMfHFZ8S2...

Please share widely! ⚛️

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Reposted by Frauke Kracke

OpenAir Collective @openaircollective.bsky.social · Feb 24

Want to support the students getting involved in the fighting climate change? Please consider supporting the Carbon Removal Challenge!

All funds go directly to the finalist teams to cover travel & lodging so they can present to industry leaders in NYC!

fundrazr.com/carbonremova...

Help University Students Pitch their Climate Solutions in NYC!

Help students present their carbon removal solutions at the Carbon Unbound Leadership Summit in New York City this Spring!

fundrazr.com

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Frauke Kracke @fraukekracke.bsky.social · Feb 24

Frontier is accepting applications for our 2025 prepurchase track!

1. We’ll now accept applications on a rolling basis (vs batched).

2. We’re explicitly focused on companies that fill gaps in the field or in our portfolio.

Read more and apply: frontierclimate.com/apply/prepur...

Apply for prepurchase

Frontier is an advance market commitment to buy an initial $1B+ of permanent carbon removal between 2022 and 2030.

frontierclimate.com

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Frauke Kracke @fraukekracke.bsky.social · Feb 21

climate.law.columbia.edu/Silencing-Sc...

Silencing Science Tracker | Sabin Center for Climate Change Law

climate.law.columbia.edu

Frauke Kracke @fraukekracke.bsky.social · Feb 21

Project Drawdown @projectdrawdown.bsky.social · Feb 21

From @guardian-climate.bsky.social: The Trump administration is stripping away support for scientific research in the US and overseas that contains a word it finds particularly inconvenient: “climate.” www.theguardian.com/environment/...

Outcry as Trump withdraws support for research that mentions ‘climate’

US government stripping funds from domestic and overseas research amid warnings for health and public safety

www.theguardian.com

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