The green world this week Americas: UN panel says humans cause global warming

05 February 2007 08:00  [Source: ICB Americas]

THE EVIDENCE pointing to global warming of the Earth's climate is "unequivocal," and there is "high confidence" - or a 90% probabability - that human activities have contributed to this warming, an international body of scientists concluded in a report issued last week.

The Intergovernmental Panel on Climate Change (IPCC), in the first of four reports the United Nations group will issue this year, predicted more intense storm cycles, a disappearance of Arctic summer sea ice and global temperature increases of 3.2-7.2F by the end of the century, and constituted perhaps the most definitive statement to date in definition of the scope and causes of global warming.

Sea levels, while most likely to increase by 28-43cm this century, could rise by as much as 59cm by the end of 2099 (over 1980-1999 levels), the scientists warned.

The panel also called for strong action against emissions.

"The options for mitigating greenhouse gas emissions appear in a different light because you can see what the costs of inaction are," said IPCC Chairman Rajendra Pachauri.

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