CDR is a new commercial sector, and the range of potential pathways are at varying stages of discovery, development, and deployment.

The sector is advancing quickly, and there are a number of approaches ready for eligibility under Article 6.4 now, with more expected to reach that stage of maturity in coming years. We have significant concern with the assertion on p. " (IPCC AR6 WGIII Report p1,796). The Brief goes on to outline five key criteria for high-quality CDR: additionality, durability, net-negativity, verification, and equity and community engagement. We strongly urge the Supervisory Body to adopt this IPCC definition of CDR, and a similarly method-neutral, criteria-based approach to determine CDR project’ eligibility under the Article 6.4 mechanism. The Information Note lists four CDR approaches under the label of "engineering based activities" - a label we do not recommend given that virtually every CDR approach is a hybrid of nature and engineering. We would suggest, instead of labeling and enumerating individual CDR pathways and approaches, that the Supervisory Body define the criteria that a given CDR project must demonstrate to be eligible under the Article 6.4 mechanism - and let science, innovation, and the market compete to deliver the solutions offering the greatest climate impact and other co-benefits.