Climate Change Science

This fact sheet presents the current status of climate change science and stresses that urgent action needs to be taken. The IPCC assesses worldwide climate change science in three working groups and in the context of three broad categories: 1) the physical science, 2) climate change impacts, adaptation and vulnerability and 3) mitigation of climate change. It is politically significant that all governments agreed to the conclusions of the scientists, making the assessment a solid foundation for sound decision-making.