Lowering greenhouse gas emissions won’t be enough to stop the world from overheating. Carbon needs to be sucked out of the atmosphere. But can that be done quickly enough -- and on what scale? Nathalie Seddon of the Nature-Based Solutions Initiative explores the ways ecosystems can be enhanced to store carbon. And we go to Iceland to visit the world’s largest direct air capture facility that removes carbon from the air, which is then injected into volcanic rock. Hosted by Vijay Vaitheeswaran, The Economist’s global energy and climate innovation editor, with environment editor Catherine Brahic, and Oliver Morton, our briefings editor.   For full access to print, digital and audio editions as well as exclusive live events, subscribe to The Economist at economist.com/climatepod and you can sign up to our fortnightly climate newsletter at economist.com/theclimateissue.   See acast.com/privacy for privacy and opt-out information.