Earth's population's currently sits at 8.3 billion people – but it's set to get much bigger.
That's according to scientists from Flinders University, who have estimated the peak population for our planet.
Based on current trends, the researchers say that the number of people on Earth could hitting a staggering 12.4 billion by the late 2070s.
This is 'dangerous', according to the experts – who warn we're already pushing Earth past its breaking point.
'The truly sustainable population is much lower and closer to what the world supported in the mid–twentieth century,' said Professor Corey Bradshaw, lead author of the study.
'Our calculations show a sustainable global population closer to about 2.5 billion people if everyone were to live within ecological limits and comfortable, economically secure living standards.'
For the study, the researchers set out to understand the impact Earth's growing population is having on food security, climate stability, and human wellbeing.
