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The BBC's Paul Wood in Athens
"The sound of summer in Greece is increasingly becoming the sound of fire engines"
 real 28k

The BBC's Susan Watts
"It's the American people who are the chief culprits in pumping global warming gases into the atmosphere"
 real 56k

Co-chairman of the panel, Sir John Houghton
"The 1990's were the warmest decade in the Northern Hemisphere for the whole millennium"
 real 28k

Keith Shine, meteorologist
"The overwhelming majority of people accept the evidence that the climate has warmed up"
 real 28k

Margot Wallstrom, EU Environment Commissioner
"We will have to put this high up on the political agenda"
 real 28k

Thursday, 12 July, 2001, 09:45 GMT 10:45 UK
Global warming 'worse than feared'
Green protesters in Berlin
Many accuse the US of putting the world at risk
Immediate action is needed to protect the Earth from dramatic climate change, a top United Nations scientist has warned.

Dr Robert Watson was speaking as an influential UN body formally published its third assessment on climate change.

The report says global temperatures are rising nearly twice as fast as previously thought.

We could conceivably be over-estimating the effect of human activity on the Earth's climate, but alternatively we could also be under-estimating it

Dr Robert Watson
IPCC Chair
Dr Watson, who chairs the IPCC (Intergovernmental Panel on Climate Change), dismissed President George W Bush's doubts about the reality of global warming.

"We know enough to say climate change is a serious environmental issue," said Dr Watson.

A host of recent studies have predicted catastrophic consequences for the environment because of global warming. Other research papers, although not as numerous, have been far more circumspect in their analysis of climate change, pointing up the many uncertainties that still grip the research field.

But the UN's IPCC report has the weight of 3,000 scientists, including several of the world's most distinguished meteorologists, behind it.

Computer models

They have given their unqualified backing to the argument that global warming is happening, and at a much faster rate than was expected.

Their prediction - based on computer models - is that temperatures could rise by as much as 5.8C by the end of the century.

Chimney in Germany
Industrial pollution is the main offender
And they stress that human activity is responsible for this crisis - that industrial pollution, and in particular its gas emissions, is the worst offender.

President Bush withdrew US support for the Kyoto Protocol, questioning the link between higher temperatures and pollution.

But Dr Watson told the BBC that, while there are some scientific uncertainties about global warming, "science should not be the reason for inaction".

"We could conceivably be over-estimating the effect human activities have on the Earth's climate," he said," but alternatively we could also be under-estimating it."

Dr Watson said it was necessary to start using cost-effective technologies to reduce greenhouse gas concentrations.

Key talks

President Bush has argued that it is unfair to expect the US and other industrialised countries to bear responsibility for the problem.

But Dr Watson said most of the greenhouse gas emissions to date had come from the industrialised world.

Farmers in Ethiopia
Farmers like these in Africa face a bleak future
"Even in the future, per capita emissions from India and China will still be well below those of the US and Europe."

The timing of the formal publication of the Third Assessment Report (Tar) - its contents have already been well reported - is important. Politicians from more than 150 countries meet in Germany next week to try to salvage the Kyoto agreement.

They are keen to coax the United States back into the fold.

Indeed, some countries have questioned the point in implementing a treaty that does not have the support of the world's most prolific carbon gas polluter.

But the chairman of the Bonn talks, Dutch Environment Minister Jan Pronk, says the agreement cannot be delayed any longer. If it is, he says, the Kyoto Protocol really will become nothing more than a dead letter.

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12 Jul 01 | Sci/Tech
Charting climate change
29 Jun 01 | Sci/Tech
Climate treaty gulf yawns wide
04 May 01 | Sci/Tech
Arctic's big melt challenged
22 Jan 01 | Sci/Tech
Global warming 'not clear cut'
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