This article is from the source 'bbc' and was first published or seen on . It will not be checked again for changes.

You can find the current article at its original source at http://news.bbc.co.uk/go/rss/-/1/hi/sci/tech/6321351.stm

The article has changed 10 times. There is an RSS feed of changes available.

Version 0 Version 1
Warming 'very likely' human-made Warming 'very likely' human-made
(about 2 hours later)
Climatic changes seen around the world are "very likely" to have a human cause, the Intergovernmental Panel on Climate Change (IPCC) will conclude.Climatic changes seen around the world are "very likely" to have a human cause, the Intergovernmental Panel on Climate Change (IPCC) will conclude.
By "very likely", the IPCC means greater than 90% probability.By "very likely", the IPCC means greater than 90% probability.
This is a stronger position than the global organisation took in its last major report in 2001.This is a stronger position than the global organisation took in its last major report in 2001.
IPCC scientists have yet to finalise other elements - including forecasts of sea level rise - in their report due to be published on Friday.IPCC scientists have yet to finalise other elements - including forecasts of sea level rise - in their report due to be published on Friday.
Experts have been divided on whether to go with a conservative forecast in the order of half a metre increase over the coming century, based on computer models which exclude the melting of icecaps, or whether to include estimates of how much water the Greenland and West Antarctic sheets are likely to contribute.Experts have been divided on whether to go with a conservative forecast in the order of half a metre increase over the coming century, based on computer models which exclude the melting of icecaps, or whether to include estimates of how much water the Greenland and West Antarctic sheets are likely to contribute.
The exact wording on projections of global temperature increase have also yet to be finalised, though the agency is likely to say that by the end of the century temperatures will rise by between about 2C and about 4.5C.The exact wording on projections of global temperature increase have also yet to be finalised, though the agency is likely to say that by the end of the century temperatures will rise by between about 2C and about 4.5C.
Stormy watersStormy waters
This week's deliberations in the French capital, Paris, will lead to a summary of the current state of climate science, drawing on the work of thousands of researchers.This week's deliberations in the French capital, Paris, will lead to a summary of the current state of climate science, drawing on the work of thousands of researchers.
Carbon dioxide concentrations have risen steadily in recent yearsThe full climate science report will be released later in the year, as will other IPCC chapters looking at the probable impacts, options for adapting to those impacts, and possible routes to reducing emissions of greenhouse gases.Carbon dioxide concentrations have risen steadily in recent yearsThe full climate science report will be released later in the year, as will other IPCC chapters looking at the probable impacts, options for adapting to those impacts, and possible routes to reducing emissions of greenhouse gases.
But the climate science summary is attracting a huge amount of interest from politicians, other scientists, and environment groups because the IPCC's mandate is to state the definitive scientific position.But the climate science summary is attracting a huge amount of interest from politicians, other scientists, and environment groups because the IPCC's mandate is to state the definitive scientific position.
Speaking in Nairobi, United Nations Environment Programme (Unep) executive director Achim Steiner told reporters the findings should be "the full stop behind any arguments over what was causing global warming".Speaking in Nairobi, United Nations Environment Programme (Unep) executive director Achim Steiner told reporters the findings should be "the full stop behind any arguments over what was causing global warming".
The IPCC is likely to give some backing to a theory which has proved highly controversial in recent years by concluding that it is likely - meaning a greater probability than 66% - that rising temperatures have contributed to the development of more powerful tropical storms in some areas of the world. HAVE YOUR SAY We need a smaller global population living a more sustainable lifestyle Chris, Strasbourg class="" href="http://newsforums.bbc.co.uk/nol/thread.jspa?threadID=5386&edition=1">Send us your comments The IPCC is likely to give some backing to a theory which has proved highly controversial in recent years by concluding that it is likely - meaning a greater probability than 66% - that rising temperatures have contributed to the development of more powerful tropical storms in some areas of the world.
Richard.Black-INTERNET@bbc.co.ukRichard.Black-INTERNET@bbc.co.uk