- Created: Thursday, 13 December 2018 15:52
- Written by Brian Henry
On 8 October 2018, the world’s leading climate scientists warned in a report for the UN’s Intergovernmental Panel on Climate Change (IPCC) that there are only 12 years for global warming to be kept to a maximum of 1.5ºC – the target limit agreed at the 2015 Paris Climate Conference – beyond which even half a degree will ‘substantially’ worsen the risks of drought, floods, extreme heat and poverty for hundreds of millions of people. Brian Henry reports.
Previously it had been thought that a 2°C rise would be safe. This would have required a cut in carbon pollution of 20% by 2030 and then to zero by 2075. To keep to 1.5°C, however, carbon pollution must be cut by 45% by 2030 and then to zero by 2050. The report says this would require carbon prices three to four times higher than for a 2°C target, but that the economic costs of doing nothing would be far higher.