"U.N. climate panel says warming is man-made"

The world's top climate scientists said on Friday global warming was man-made, spurring calls for urgent government action to prevent severe and irreversible damage from rising temperatures.

The United Nations panel, which groups 2,500 scientists from more than 130 nations, predicted more droughts, heatwaves, rains and a slow gain in sea levels that could last for more than 1,000 years.

The scientists said it was "very likely" -- or more than 90 percent probable -- that human activities led by burning fossil fuels explained most of the warming in the past 50 years.

That is a toughening from the Intergovernmental Panel on Climate Change's (IPCC) last report in 2001, which judged a link as "likely," or 66 percent probable....

Meanwhile:

US thinktank offering cash to dispute UN climate panel: report

A right-wing American thinktank is offering 10,000 dollars (7,700 euros) to scientists and economists to dispute a climate change report set to be released by the UN's top scientific panel, media reported.

The American Enterprise Institute (AEI), which receives funding from oil giant ExxonMobil according to the Guardian, sent letters to scientists in the United States, Britain and elsewhere offering the payments in exchange for articles emphasising the shortcoming of the UN's report.

AEI also reportedly offered additional payments, and to reimburse travel expenses.