A harrowing new climate change report warns we may be on the way to extinction, claiming there is a “high likelihood” human civilization will come to an end by 2050 unless action is taken on greenhouse gas emissions.

The dire paper, which predicts a biblical-like scenario of devastating floods, drought, famine and a breakdown in international order, has been endorsed by the former chief of Australia’s military.

The analysis, published May 30 by Australian think tank the Breakthrough National Centre for Climate Restoration, calls for a new approach to climate change and paints a bleak picture of the world in 30 years if nothing is done to combat greenhouse emissions.

Assuming we stay on our current trajectory, emissions will lock in a 3 degree Celsius (5.4 degrees Fahrenheit) global warming, setting off a disastrous chain off events which the report’s authors claim will lead to “a high likelihood of human civilization coming to an end.”

According to the report’s central “2050 scenario,” one billion people will be forced to relocate from unlivable conditions while food production will become inadequate to feed the global population, as first reported by VICE.

North America will suffer from devastating weather extremes including wildfires, heatwaves and drought — while other places in the world such as the Middle East and West Africa will become unlivable.

Meanwhile, 55% of the global population would be subjected to more than 20 days a year of lethal heat conditions, “beyond the threshold of human survivability.”

“This scenario provides a glimpse into a world of ‘outright chaos’ on a path to the end of human civilization and modern society as we have known it, in which the challenges to global security are simply overwhelming and political panic becomes the norm,” the authors claim.

The report, meant to serve as a briefing for policymakers, comes with a forward from retired Admiral Chris Barrie — chief of the Australian Defence Force from 1998 to 2002 — who commends the paper for laying “bare the unvarnished truth about the desperate situation humans, and our planet, are in.”