UNDO is a leading CDR project developer specialising in enhanced weathering, a nature-based technology that permanently locks away CO₂ from the atmosphere. Part of Stripe’s Climate Portfolio, UNDO is scaling operations in the UK and Australia. The rock, a by-product of the aggregate industry, is given to local farmers for free to apply on agricultural land using existing infrastructure. UNDO aim to be the first project to remove 1 million, and then 1 billion tonnes via ERW.