In 2018 the Intergovernmental Panel on Climate Change (IPCC) released its 1.5°C Special Report which reinforced the huge risks of global warming above 1.5°C, leading to widespread calls for greater climate action.
The IPCC Special Report shows the impacts of global warming of 1.5 °C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty.
The differences between holding global warming to 1.5°C as opposed to 2°C are illustrated in a World Resources Institute infographic below.