Blog - Our Journey to Negative Emissions
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.
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.
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.
Podcast: What we learned from the world's largest EW greenhouse experiment
Listen to a podcast about our latest insights from our experiments
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
“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!
A Love Letter to Humanity - Legion 44 Film Premiere
Premiere of Documentary "Legion 44" in Nuremberg
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
Update: Our three main enhanced weathering experiments
An overview of our enhanced weathering experiments in fields and in a greenhouse.
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.
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
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.
Conference Talk: EW with ultramafic rock: Field experiments with alfalfa in Greece
A conference presentation by Dr. Ingrid Smet
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.
Two new important publications for the enhanced weathering world
Two important new publications were published that we want to draw your attention to
Deep Dive: About the temperature dependence of CO₂ efflux in our EW experiments
While reanalyzing our data we found that the differences in CO2 effluxes between treatments/controls are maintained across the whole temperature spectrum. Temperature differences are not the explanation for the differences in effluxes between variations.
What happens when a former monitoring-software CEO/CTO measures enhanced weathering experiments
A story about the IT technology behind “the most closely monitored and pampered blades of grass I've ever seen” in our greenhouse.
The “Carbdown Model” of carbon fluxes and pools in the soil (enhanced weathering for CDR)
Introducing our carbon-focused thought-model of the processes that occur in the soil after adding rock amendments for EW.
Insights from monitoring leachate alkalinity, pCO₂ and CO₂ efflux of 400 weathering experiments over one year
We present insights we gained from CO₂ efflux, soil pCO₂ and soil water leachate alkalinity data of 400 greenhouse experiments for enhanced weathering (EW).
Carbdown Fluxmeter Army: Building Robotic Scientific Instruments For CO₂ Efflux Monitoring Of EW Experiments
Why and how we built our army of autonomous CO₂ fluxmeters