For millions of years, CO₂ has combined with rainwater to form carbonic acid. When this dilute acid falls on mountains, forests and grassland, the CO₂ interacts with rocks and soil, mineralises and is safely stored as solid carbon for hundreds of thousands of years.
UNDO accelerates and enhances this natural weathering process by spreading crushed silicate rock such as basalt on agricultural land, vastly increasing the surface area of the rock and therefore increasing its contact with CO₂.
Part of Stripe’s 2021 Climate Portfolio, UNDO is partnering with landowners and scaling operations in the UK, Australia and Canada. In the UK, the rock is an existing aggregate product product of the mining and quarrying industry, so UNDO does not use additional energy to procure it. The rock is also spread using existing agricultural infrastructure.
UNDO’s science, research and innovation team is world-leading. Its climate scientists and advisors are developing the first verification methodology for enhanced weathering. The UNDO geochemical weathering model, developed in-house, predicts the rate at which sequestration occurs based on more than 10 external variables. UNDO’s proprietary data platform, Newton, tracks exactly what type of rock is being spread where and in what volumes in real-time. This data, which can be directly input by our global operational partners, is stored and processed to generate carbon credits.
