Working Group II of the IPCC Sixth Assessment Report focuses on climate change impacts, adaptation, and vulnerability in the context of sustainable development. This IPCC evaluates climate model simulations from CMIP5 and CMIP6 of the World Climate Research Programme. Depending on global warming levels after 2040, climate change will threaten natural and human systems. Mid- and long-term consequences are several times higher for 127 identified major hazards. Climate change is having increasingly dire, interconnected, and often irreversible effects on ecosystems, biodiversity, and human systems, and risk provides a framework for comprehending these effects and for devising strategies to prevent unfavourable outcomes for present and future generations. As climate change implications and actions are enacted, more is known about how they affect justice and socioeconomic advancement. AR6 emphasises change and quick climate action to achieve such goals.