SILVER BULLET OR RED HERRIHG?

摘要

The Committee on Climate Change's Sixth Carbon Budget is clear that to achieve the UK's net zero carbon emissions goal by 2050 will require engineering solutions to remove greenhouse gas emissions. Moreover, as the November date for the United Nations' Climate Change Conference (COP26) in Glasgow draws ever closer, member nations' will be considering how to capture emissions in their own plans to meet the targets of the Paris Agreement. Enter direct air carbon capture and storage (DACCS), one of the negative emission technologies (NETs) highlighted by the Sixth Carbon Budget and being trialled around the world. It's a simple solution: direct air capture (DAC) technologies use low carbon energy to take carbon dioxide (CO_2) emissions straight from the air for either storage in geological sinks or reuse. But as the technology is in its infancy and unproven at scale, does DAC offer a silver bullet to the climate change conundrum?