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World's leading scientists i n desperate plea to politicians to act on climate change
14/03/09
source : Richard Alleyne  Telegraph Co


World's leading scientists in desperate plea to politicians to act on climate change
The world's leading scientists yesterday issued a desperate plea to politicians to act on climate change, amid warnings that without action the world faces decades of social unrest and war.

By Richard Alleyne, Science Correspondent in Copenhagen
Last Updated: 8:29AM GMT 13 Mar 2009

Increasing average temperatures could mean massive rises in sea level and whole areas devastated by hurricanes Photo: GETTY
In what was described as a watershed moment, more than 2,500 leading environmental experts agreed a statement that called on governments to act before the planet becomes an unrecognisable – and, in places, impossible – place to live.

At an emergency climate summit in Copenhagen, scientists agreed that "worst case" scenarios were already becoming reality and that, unless drastic action was taken soon, "dangerous climate change" was imminent.


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Capitalism can lead the way on climate changeIn a strongly worded message that, unusually for academics, appealed directly to politicians, they said there was "no excuse for inaction" and that "weak and "ineffective" governments must stand up to big business and "vested interests".

Steps should be "vigorously and widely implemented", they said, to reduce greenhouse gases. Failure to do so would result in "significant risk" of "irreversible climatic shifts", the statement added.

The plea came as Lord Stern, the former chief economist of the World Bank whose report two years ago drew attention to the possible results of global warming, told the conference that unless politicians grasped the gravity of the situation it would be "devastating".

Increases in average temperatures of six degrees by the end of the century were an increasing possibility and would produce conditions not seen on Earth for more than 30 million years, he said.

That could mean massive rises in sea level, whole areas devastated by hurricanes and others turned into uninhabitable desert, he claimed, forcing billions of people to leave their homelands.

He told the summit that politicians continued to underestimate the impact of climate change and that scientists needed to redouble their efforts to get them to understand. "Much of southern Europe would look like the Sahara. Many of the major rivers of the world, serving billions of people, would dry up in the dry seasons or re-route.

"What would be the implication? Hundreds of millions of people would have to move, probably billions. What would be the implication of that? Extended conflict, social disruption, war essentially, over much of the world for many decades."

The British economist was speaking as the Prince of Wales warned that nations were "at a defining moment in the world's history'' over climate change. As he continued his tour of South America, he delivered his most impassioned and urgent plea yet on the need to tackle global warming, saying there were "less than 100 months" to save the planet.

The Copenhagen conference is intended to publicise the latest research on climate change ahead of December's meeting of world leaders. The United Nations Climate Conference, which will also be held in Copenhagen, aims to draft an updated Kyoto-style agreement on reducing emissions.

Under the Kyoto deal, developed nations have to cut emissions of greenhouse gases by 5.2 per cent below 1990 levels by 2008-2012.

However, during the meeting scientists have frequently spoken about how former assumptions about the risks have had to be redrawn. They have repeatedly warned that higher than expected emissions have meant that temperatures will rise at rates far higher than thought just a few years ago. This in turn will lead to disastrous sea level rises, melting of the icecaps and acidification of the oceans.

The weather will also change, scientists warned, resulting in destruction of the rainforests, widespread droughts and flooding.

Prof Kevin Anderson, the research director at the Tyndall Centre for Climate Change Research in Manchester, said: "Scientists have lost patience with carefully constructed messages being lost in the political noise. We are now prepared to stand up and say enough is enough."
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