Since 2019 we are dedicated to supporting the people and companies working on CDR, helping them find their footing and thrive. The Carbon Drawdown Symposium 2026 is a two-day scientific event dedicated entirely to the data and learnings from our greenhouse experiment—the world’s largest enhanced weathering (EW) greenhouse.
On 16 June, scientists working directly with our samples and datasets will present their findings in a full day of talks, live-streamed online and freely accessible. On 17 June, the focus shifts to hands-on workshops, building directly on the results and discussions from the first day.
Alongside many others, we believe that enhanced weathering will become a crucial component of the CDR toolkit in the future. However, the CO₂ removal effects of enhanced weathering in soils are not yet fully understood and in-situ measurements continue to pose significant challenges. Since 2019, we have contributed to this global scientific endeavour through multiple field and greenhouse experiments with extensive data collection. Our focus is on high-frequency lab measurements and continuous 24/7 monitoring using hundreds of electronic sensors in large-scale experiments spanning several years. Our aim is to identify which soil and rock combinations are most effective - or, in some cases, ineffective - at CO₂ removal.
Over the past three years we have run three enhanced weathering experiments in fields and in a greenhouse in which we are using various monitoring approaches to assess the carbon dioxide removal effects. A large group of scientists have dissected the 400 pot experiments from our greenhouse in labs in almost every way possible.
Now it is time to put together the puzzle pieces into a (hopefully) rather complete picture. At the upcoming Carbon Drawdown Symposium, we are transitioning from theory to execution. Our plan is to collect and present all the results from leachate, sensors, biomass, cation pools, secondary minerals and soil organic carbon pools and discuss their changes to bring the MRV and entire enhanced rock weathering field a huge step further!
We invite you to join us in this important journey.