<p>On 27th September, the Intergovernmental Panel on Climate Change (IPCC) has published the summary for policymakers (SPM) of its working group I (WG I) report, and for the first time, the topic of “geoengineering” is included in such a summary. As the IPCC is a scientific body under the auspices of the United Nations (UN) and its assessment reports provide a baseline for the UN climate negotiations, this is of considerable importance in the global discussions around climate change.</p>