"This refers to “Governing uncertainty in geoengineering” (April 23). Experiments with atmospheric and natural forces are more dangerous than containing and repairing damage. "

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Lenton, A.; Boyd, P.; Thatcher, M.; Emmerson, K. (2019): Foresight must guide geoengineering research and development. In: Nature Climate change 9 (5), S. 342. DOI: 10.1038/s41558-019-0467-z.

"Large-scale climate geoengineering will probably be required to limit warming to well below 2 °C, in line with the 2015 Paris Agreement. While geoengineering has long been included in the development of many (future) low-carbon emissions pathways, key questions remain about the efficacy and ability of such climate intervention to fulfil its anticipated role in limiting warming. As such, the social license for geoengineering has not been granted for research using unbounded large-scale experiments, never mind full-scale deployment."

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"At the end of a cul-de-sac called Fresh Way, two bright green structures the size of shipping containers gleam in the warm sunlight, quietly sucking from the air the carbon dioxide that is warming the planet."

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"The Government faces spiralling climate change costs unless it accelerates plans to fund a new breed of carbon capture projects by the mid-2020s, according to MPs. A select committee report warned that without carbon capture the cost of meeting the country's legally-binding climate targets will double to 2pc of GDP by 2050."

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