A new report from the Intergovernmental Panel on Climate Change (IPCC) contains some stark messages. It is no longer considered that limiting warming to 2 degrees above pre-industrial levels is the ‘safe’ maximum – rather warming must be limited to 1.5 degrees if the world is to avoid the worst effects of climate change.
Climate scientists expect that we will reach 1.5 degrees of warming within just 12 years ... and the world is currently on course to a total warming of 3 degrees above pre-industrial levels. This is significantly more than many natural and human systems can tolerate without major ramifications.
The IPCC report is clear in its recommendations. Urgent action is needed on both climate change mitigation and adaptation, and the amount of mitigation needed to limit warming to 1.5 degrees goes far beyond not only what is on existing political agendas but, in some cases, beyond scientific development.
Read more at http://ipcc.ch/report/sr15/ with a summary at http://report.ipcc.ch/sr15/pdf/sr15_spm_final.pdf