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In 2023 the Intergovernmental Panel on Climate Change (IPCC) released its sixth Synthesis Report since it began reporting in the early 1990s. It carried an urgent call to action, citing a continual increase in global greenhouse gas emissions and current global warming of 1.1 degrees Celsius above pre-industrial levels. The IPCC said emissions must be halved if the world is to limit warming to 1.5 degrees, but Harry Bruce asks if this is enough of a global wake-up call.