http://www.cbc.ca/canada/north/story/2007/01/31/climate-ipcc.html
Climate change report to say global warming 'very likely' man-made
An authoritative report on global warming will say it is "very likely" — or 90 per cent certain — climate change is caused by humans burning fossil fuels, and warns of rising temperatures and sea levels and extreme weather in the coming century, according to officials involved in writing the report.
According to drafts, the report will forecast a temperature increase of two to four degrees Celsius by the year 2100, which would lead to a rise in sea levels and extreme weather, such as droughts and heat waves.
The world's 10 warmest years in temperature records dating back to 1850 have all occurred since 1994, according to the United Nations weather agency.
A UN report issued two months ago said greenhouse gases in the atmosphere reached record levels in 2005 and were expected to increase in 2006. Concentrations of carbon dioxide and nitrous oxide both rose in 2005, the study's authors found.
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