New scientific study finds that if humanity wants a 50-50 chance of limiting global warming to 1.5°C, we can only emit another 250 gigatonnes of CO2.
— Read on reneweconomy.com.au/carbon-budget-for-1-5c-will-run-out-in-six-years-at-current-emissions-levels-new-research/

not 1 in a aMillion but 50:50 what odds do we need to feel safe?