The IPCC report will include a crucial 40-page Summary for Policymakers.
Extreme weather, ecosystem collapse, mosquito-borne disease, water shortages and reduced crop yields are already measurably worse due to rising temperatures.
Just in the last year, the world has seen a cascade of unprecedented floods, heatwaves and wildfires across four continents.
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But the most comprehensive assessment so far of the grave and accelerating risks of climate change from the Intergovernmental Panel on Climate Change (IPCC) is expected to show that this is just the beginning.
Released under the shadow of Russia's invasion of Ukraine, the IPCC report will include a crucial 40-page Summary for Policymakers distilling thousands of pages of scientific research.
The Intergovernmental Panel on Climate Change chair Hoesung Lee attends a meeting. File/AFP
This has been reviewed line-by-line by delegates from nearly 200 countries in sometimes fraught negotiations.
IPCC chair Hoesung Lee said the "stakes have never been higher" as the process kicked off two weeks ago.
An early draft seen by AFP in 2021 suggests that the report will lay out in relentless detail the harrowing cost of human-driven carbon pollution to interconnected natural and human-built systems.
Warming is affecting everything from the availability of food and water to the survival chances of many species -- and the IPCC report is likely to outline expectations of a rapid escalation of impacts in the near future.
It will also underscore the urgent need for "adaptation" -- a term that refers to preparations for devastating consequences that can no longer be avoided.
In some cases this means that adapting to intolerably hot days, flash flooding and storm surges has become a matter of life and death.
The UN report is expected to show that warming already threatens billions of people.
While climate change will affect the entire planet, impacts will not fall equally, the IPCC is expected to underline, with the poorest and most vulnerable often hit hardest.
Earth's surface has warmed 1.1 degrees Celsius since the 19th century.
The 2015 Paris deal calls for capping global warming at "well below" 2C, and ideally 1.5 degrees Celsius (2.7 degrees Fahrenheit).
In August 2021, another IPCC report on the physical science of human-caused climate change found that global heating is virtually certain to pass 1.5C, probably within a decade.
Edward Carr, a professor at Clark University and lead author of one of the IPCC report's chapters, stressed the urgency of action to reduce emissions and adapt to the challenges ahead.
"We've only got so many choices, there's a finite set of choices we can make that would move us in a productive way into the future," he told AFP.
"Every day we wait and delay, some of those choices either get harder or go away."
Researchers from Cambridge University, the University of East Anglia and London-based SOAS looked at a "realistic scenario" known as RCP 8.5, where carbon and other polluting emissions continue rising in coming decades.
Crumbling glaciers and torrents of melt-water slicing through Greenland's ice block — as thick as ten Eiffel Towers end-to-end — were the single biggest source of global sea level rise in 2019 and accounted for 40 per cent of the total, researchers reported in the journal Communications Earth & Environment.
Swedish activist Greta Thunberg said Monday she has returned to school after a year off campaigning to curb climate change.
A team of young Emirati engineers at the Sharjah Research, Technology and Innovation Park (SRTIP) have achieved a new breakthrough in developing prosthetic limbs using 3D printing technology.
The diameter of the asteroid, which was called “2023 DZ2”, is estimated to be 93 metres, the height of the Big Ben clock tower is 96 meters, and its maximum possible diameter is 96 meters, and scientists claim that it could be as small as 41 meters.
Astronomers had long been searching for comet-like objects entering the Solar System from the vastness of interstellar space, but had never before observed one.
Contacts between Riyadh and Damascus had gathered momentum following a landmark agreement to re-establish ties between Saudi Arabia and Iran, a key ally of President Bashar Al-Assad, a regional source aligned with Damascus said.