Climate change mitigation, also called climate change decarbonisation, is an action to limit the greenhouse gases in the atmosphere that cause climate change. Climate change mitigation actions include conserving energy and replacing fossil fuels with clean energy sources. Secondary mitigation strategies include changes to land use and removing carbon dioxide (CO2) from the atmosphere.[1][2] 2022 assessments emphasize that global greenhouse gas emissions must peak before 2025 and decline by about 43% by 2030 to limit warming to 1.5 °C, requiring rapid transitions in energy, transport, and land-use systems.[3]
The adopted climate change mitigation policies are insufficient, as they contribute to some changes but fail to accelerate transitions at the scale and speed required,[4][5] and would still result in global warming of about 2.7 °C by 2100,[6] significantly above the 2015 Paris Agreement's[7] goal of limiting global warming to below 2 °C.[8][9]Recent research shows that demand-side climate solutions—such as shifts in transportation behavior, dietary change, improved building energy efficiency, and reduced material consumption—could reduce global greenhouse gas emissions by 40% to 70% by 2050 while improving human well-being
