With the world looking likely to blow past the temperature targets laid out in the 2015 Paris climate agreement, a growing number of voices are saying that carbon removal technologies will be necessary if humanity is to achieve its long-term climate goals. If these approaches succeed, they could help nations and corporations to meet their climate commitments — and help the world to halt global warming.
However, questions remain about the financial viability of these technologies, and whether they can live up to the hype.
This is an audio version of our Feature: Three ways to cool Earth by pulling carbon from the sky
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