A United Nations Environment Programme Report  published on 26 November 2019 says that, even if all current unconditional commitments under the Paris Agreement are implemented, the world is nevertheless heading for a 3.2°C temperature rise.
The Intergovernmental Panel on Climate Change (IPCC) has warned that going beyond 1.5°C will increase the frequency and intensity of climate impacts. In order to meet the Paris target of a 1.5°C, global emissions must be cut by 7.6% every year for the next 10 years.
The report states that technologies and policy knowledge already exist to cut emissions, but transformations must begin now. G20  nations account for 78 per cent of all emissions, but 15 G20 members have not committed to a timeline for net-zero emissions
 Emissions Gap Report 2019 by the UN Environment Programme www.unenvironment.org/resources/emissions-gap-report-2019
 G20 are: Argentina, Australia, Brazil, Canada, China, European Union, Germany, France, India, Indonesia, Italy, Japan, Mexico, Russia, Saudi Arabia, South Africa, South Korea, Turkey, the United Kingdom and the United States.