Human activities "could lead to abrupt or irreversible climate changes and impacts," the agreed text said.
2:39 AM: Well, that was the ABC carrying AAP. A quick Google shows that the Brisbane Times are the only other media to pick up this story so far. There's a lot more detail, starting with the death-knell for climate change denialism:
The IPCC experts agreed that the rise in Earth's temperature observed in the past few decades was principally due to human causes, not natural ones, as "climate skeptics" often aver.
The impacts of climate change are already visible, in the form of retreating glaciers and snow loss in alpine regions, thinning Arctic summer sea ice and thawing permafrost, according to predictions in the three IPCC reports issued earlier this year.
By 2100, global average surface temperatures could rise by between 1.1 C (1.98 F) and 6.4 C (11.52 F) compared to 1980-99 levels, while sea levels will rise by between 18 and 59 centimetres (7.2 and 23.2 inches), according to the IPCC's forecast.
Heatwaves, rainstorms, drought, tropical cyclones and surges in sea level are among the events expected to become more frequent, more widespread and/or more intense this century.
As a result, water shortages, hunger, flooding and damage to homes will be a heightened threat.
"All countries" will be affected, says the IPCC. Those bearing the brunt, though, will be poor countries which incidentally bear the least responsibility for creating the problem.
Yan Hong, deputy secretary of the World Meteorological Organization (WMO), one of the IPCC's two parent bodies, warned on Monday that climate change bore "potential implications for world peace" by intensifying squabbles over water, food and energy.
"It could also lead to massive population resettlement, especially to urban areas that may not have capacity to shelter, feed and employ them," he said.
The IPCC won this year's Nobel Peace Prize alongside climate campaigner and former US vice president Al Gore.
The panel, comprising specialists in atmospheric chemistry, ocean biology, glaciation, economics and many other disciplines, issues regular reviews, called assessment reports, on global warming.
It has been widely praised for the impartiality and objectivity of its reports, although this year some experts have said its review process may be too conservative and slow-moving to assess what now transpires to be a fast-moving problem.
This year's is the fourth assessment report since the IPCC was established in 1988 by the WMO and UN Environment Programme (UNEP).© 2007 AFP