Enhanced Weathering Policy Primer: Assessing the Opportunity

INTRODUCTION

There is clear scientific consensus that, in addition to rapid and deep reduction of global greenhouse gas emissions, carbon dioxide removal (CDR) will be required at an immense, multi-gigatonne (Gt) annual scale by mid-century to meet the goals of the Paris Agreement and limit warming to 1.5 or even 2°C.1 CDR encompasses a range of approaches, and to meet the massive challenge to achieve gigatonne scale will require a portfolio of solutions.2 Many of these pathways are new technologies that could potentially take years to develop, demonstrate, and deploy. Methods of CDR that offer meaningful co-benefits, and that can be delivered at significant scale in the coming years, with the potential for low cost, are of particular interest.

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