‘All hands on deck’: Cities respond to landmark IPCC report

António Guterres, the United Nations Secretary General, called the latest report from the Intergovernmental Panel on Climate Change (IPCC) “code red for humanity".

The Sixth Assessment Report on climate science says it is “unequivocal” that human activity is changing the climate in unprecedented and sometimes irreversible ways. It warns of increasingly extreme heatwaves, droughts and flooding, and that temperatures are on course to rise by 1.5°C or more above pre-industrial levels within the next two decades, breaching the ambition of the 2015 Paris Agreement.

Scientists say preventing this threshold from being exceeded requires “immediate, rapid and large-scale reductions” in greenhou...