![]() With clear benefits to people and natural ecosystems, the report found that limiting global warming to 1.5☌ compared to 2☌ could go hand in hand with ensuring a more sustainable and equitable society. In October 2018 the IPCC issued a special report on the impacts of global warming of 1.5☌, finding that limiting global warming to 1.5☌ would require rapid, far-reaching and unprecedented changes in all aspects of society. Reducing GHG emissions across the full energy sector requires major transitions, including a substantial reduction in overall fossil fuel use, the deployment of low-emission energy sources, switching to alternative energy carriers, and energy efficiency and conservation.If global warming transiently exceeds 1.5☌ in the coming decades or later, then many human and natural systems will face additional severe risks, compared to remaining below 1.5☌.Vulnerability of ecosystems and people to climate change differs substantially among and within regions.Approximately 3.3 to 3.6 billion people live in contexts that are highly vulnerable to climate change.Evidence of observed changes in extremes such as heatwaves, heavy precipitation, droughts, and tropical cyclones, and, in particular, their attribution to human influence, has strengthened since the Fifth Assessment Report. Human-induced climate change is already affecting many weather and climate extremes in every region across the globe.The scale of recent changes across the climate system as a whole – and the present state of many aspects of the climate system – are unprecedented over many centuries to many thousands of years.Widespread and rapid changes in the atmosphere, ocean, cryosphere and biosphere have occurred. It is unequivocal that human influence has warmed the atmosphere, ocean and land.It is based on the reports of the three Working Groups of the IPCC – on the physical science impacts, adaptation and vulnerability and mitigation – as well as on the three Special Reports on Global Warming of 1.5☌, on Climate Change and Land, and on the Ocean and the Cryosphere in a Changing Climate. The IPCC’s Sixth Assessment Report, to be released in March 2023, provides an overview of the state of knowledge on the science of climate change, emphasizing new results since the publication of the Fifth Assessment Report in 2014. The Intergovernmental Panel on Climate Change (IPCC) was set up by the World Meteorological Organization (WMO) and United Nations Environment to provide an objective source of scientific information. The UN Intergovernmental Panel on Climate Change (IPCC) ![]()
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