The Earth could be doomed to breach the symbolic 1.5 degrees Celsius, warming limit, as in as little as three years at current levels of carbon dioxide emissions.
That's the stark warning from more than 60 of the world's leading climate scientists in the most up-to-date assessment of the state of global warming.
Lead author Professor Piers Forster, who is director of the Priestley Centre for Climate Futures at the University of Leeds, says things are moving in the wrong direction. He says scientists are seeing some unprecedented changes, as well as the heating of the Earth and sea-level rising acceleration.
Nearly 200 countries agreed to try to limit global temperature rises to 1.5 degrees Celsius above levels of the late 1800s in a landmark agreement in 2015 with the aim of avoiding some of the worst impacts of climate change. But countries have continued to burn record amounts of coal, oil and gas, and chop down carbon-rich forests, leaving the international goal in peril.