Sustained above-average temperatures, as the planet has seen so far this century, can affect the ice sheet, global sea levels, ecosystems, agriculture, coastal development, ocean acidification, rainfall and a number of cyclical rhythms. The latest IPCC Working Group I contribution to the Sixth Assessment Report addresses the most up-to-date physical understanding of the climate system and climate change, AR6 "is a code red for humanity", says the UN Secretary General António Guterres.
Organisations such as CSIRO, the International Energy Agency, NASA, the Intergovernmental Panel on Climate Change (IPCC) and the US National Oceanic and Atmospheric Administration (NOAA) all agree that we must drastically reduce greenhouse gas emissions if we are to prevent catastrophic climate change into the future.