The latest report published by the IPCC, the UN body that evaluates climate change, raises the red alert: if we do not reduce CO2 emissions it will be catastrophe.
Many of the changes observed in the climate are unprecedented in thousands, if not hundreds of thousands of years, and some of the changes
already set in motion—such as continued sea level rise—are irreversible.
However, strong and sustained reductions in emissions of carbon dioxide (CO2) and other greenhouse gases would limit climate change. While benefits for air quality would come quickly, it could take 20-30 years to see global temperatures stabilize. Those are main conclusions reached by IPCC Working Group I report, Climate Change 2021: the Physical Science Basis, approved by 195 member governments of the IPCC.