The Paris Agreement sets a target of 1.5°C above pre-industrial levels. Why is this the target?

The science

The Paris Agreement is based on the science of climate change. The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for the assessment of climate change. The IPCC has produced a series of reports on the science of climate change. The most recent report, the Fifth Assessment Report (AR5), was published in 2014. The AR5 is the basis for the Paris Agreement.

The AR5 is based on the best available science. It is the result of the work of thousands of scientists from around the world. The AR5 is the most comprehensive assessment of climate change ever produced. It is the result of the work of thousands of scientists from around the world.