The goal to limit global warming to 1.5°C was agreed in Paris in 2015 Chesnot/Getty Images
The world has already warmed by about 1.2°C since pre-industrial times. Within the next four years, there is a 48 per cent chance temperatures could breach the 1.5°C threshold for the first time, according to the UK Met Office. At most, the world has nine years until breaching 1.5°C for at least one year is inevitable, according to the Global Carbon Project.
It would be a totemic milestone. The 1.5°C target has become …
