On Monday, an extremely important report on the physical science of climate change will be released to the world. Produced by the Intergovernmental Panel on Climate Change (IPCC), the report will give world leaders the most up-to-date information about climate change to inform their policies. It is an enormous undertaking, and has been a long time coming.

Source: Monday’s IPCC report is a really big deal for climate change. So what is it? And why should we trust it?