https://www.bbc.com/news/science-environment-48964736

… [T]here’s a growing consensus that the next 18 months will be critical in dealing with the global heating crisis, among other environmental challenges.

Last year, the Intergovernmental Panel on Climate Change (IPCC) reported that to keep the rise in global temperatures below 1.5C this century, emissions of carbon dioxide would have to be cut by 45% by 2030.

But today, observers recognise that the decisive, political steps to enable the cuts in carbon to take place will have to happen before the end of next year.

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