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Blog - Our Journey to Negative Emissions

Portfolio Spotlight: Syntopa — Supercharging Enhanced Weathering with Microbes
Portfolio Spotlight: Syntopa — Supercharging Enhanced Weathering with Microbes

What if a few liters of bacteria-laced water could double—or even quintuple—the speed at which rock dust pulls carbon from the atmosphere?

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Dirk PaesslerApril 22, 2025
Portfolio Spotlight: Octavia Carbon, DAC in Kenya
Portfolio Spotlight: Octavia Carbon, DAC in Kenya

Direct Air Capture, the Kenyan way

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Dirk PaesslerApril 7, 2025
Portfolio Spotlight: Inplanet, EW in Brazil
Portfolio Spotlight: Inplanet, EW in Brazil

InPlanet is on pace to spread 200 kilotons of basalt early this year.

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Dirk PaesslerMarch 31, 2025
Why we are ditching most replicates in favor of having more variations
Why we are ditching most replicates in favor of having more variations

For our new experiment we will move away from replicating treatments to intentionally choose more variations over more replicates. Here is why.

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Dirk PaesslerMarch 26, 2025
Portfolio Spotlight: Tropicarbon, EW in Colombia
Portfolio Spotlight: Tropicarbon, EW in Colombia

Tropicarbon decided to tackle agriculture, an industry with some of the highest CO2 emissions.

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Dirk PaesslerMarch 18, 2025
Climate tech is entering its toughest funding environment in years.
Climate tech is entering its toughest funding environment in years.

Here are three trends that will make it harder for climate startups to get fresh capital. Plus, there are opportunities, too.

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Dirk PaesslerMarch 16, 2025
What dismantling an EW greenhouse experiment looks like
What dismantling an EW greenhouse experiment looks like

In preparation of the next experiment we have dismantled most of our 2023/2024 greenhouse experiment with 400 lysimeter pots over recent weeks.

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Dirk PaesslerMarch 13, 2025
How we assess the CDR effect of an EW experiment
How we assess the CDR effect of an EW experiment

We use alkalinity measurements comparing treated and untreated pot experiments to measure the CDR effect of a rock dust addition to a specific soil.

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Dirk PaesslerMarch 10, 2025
Podcast: What we learned from the world's largest EW greenhouse experiment
Podcast: What we learned from the world's largest EW greenhouse experiment

Listen to a podcast about our latest insights from our experiments

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Dirk PaesslerFebruary 3, 2025
What We Learned from the World’s Largest Greenhouse Experiment
What We Learned from the World’s Largest Greenhouse Experiment

The Unexpected Challenges of Enhanced Weathering: What We Learned from the World’s Largest Greenhouse Experiment

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Dirk PaesslerJanuary 29, 2025
“Failed” enhanced weathering experiments create valuable insights
“Failed” enhanced weathering experiments create valuable insights

With our field and greenhouse experiments we spent several hundred thousand US$ on failed experiments. Here’s why it was still money well spent!

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Dirk PaesslerJanuary 17, 2025
A Love Letter to Humanity - Legion 44 Film Premiere
A Love Letter to Humanity - Legion 44 Film Premiere

Premiere of Documentary "Legion 44" in Nuremberg

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Dirk PaesslerNovember 28, 2024
Deep Dive: Why measuring alkalinity is not the same as quantifying HCO₃⁻
Deep Dive: Why measuring alkalinity is not the same as quantifying HCO₃⁻

How to avoid confusion about the seemingly straightforward use of alkalinity to quantify CO₂ removal

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Dirk PaesslerOctober 5, 2024
Update: Our three main enhanced weathering experiments
Update: Our three main enhanced weathering experiments

An overview of our enhanced weathering experiments in fields and in a greenhouse.

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Dirk PaesslerAugust 7, 2024
How we assess the CDR effects of EW experiments
How we assess the CDR effects of EW experiments

How we calculate the amount of CO₂ that has been removed from the atmosphere by weathering in our lysimeter experiments.

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Dirk PaesslerAugust 2, 2024
Could soil EC sensors or leachate EC measurements be used to monitor enhanced weathering?
Could soil EC sensors or leachate EC measurements be used to monitor enhanced weathering?

Insights from several hundred soil EC sensors and several thousand water analyses in three long-term weathering experiments

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Dirk PaesslerJuly 25, 2024
Conference talk: Testing several MRV approaches in a large-scale ERW greenhouse experiment
Conference talk: Testing several MRV approaches in a large-scale ERW greenhouse experiment

A conference presentation by Jens Hammes at the 3rd International Conference on Negative CO2 Emissions, 2024 in Oxford.

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Dirk PaesslerJuly 17, 2024
Conference Talk: EW with ultramafic rock: Field experiments with alfalfa in Greece
Conference Talk: EW with ultramafic rock: Field experiments with alfalfa in Greece

A conference presentation by Dr. Ingrid Smet

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Dirk PaesslerJuly 17, 2024
Greenhouse Adventures: A journey through unexpected obstacles (Part 2)
Greenhouse Adventures: A journey through unexpected obstacles (Part 2)

Keeping a long-term monoculture greenhouse experiment with hundreds of pot experiments alive and working over 2-3 years is not as easy as one could think.

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Dirk PaesslerJuly 5, 2024
Two new important publications for the enhanced weathering world
Two new important publications for the enhanced weathering world

Two important new publications were published that we want to draw your attention to

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Dirk PaesslerJune 26, 2024
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