British Climate-Change Conference Report: It's Worse Than We Thought

Associated Press12:00 PM Jan, 30, 2006 EST

The threat posed by climate change may be greater than previously thought, and global warming is advancing at an unsustainable rate, Prime Minister Tony Blair said in a report published Monday.

The government-commissioned report collates evidence presented at a conference on climate change hosted by Britain's Meteorological Office last year. It says scientists now have "greater clarity and reduced uncertainty" about the impacts of climate change.

In a foreword, Blair said it was clear that "the risks of climate change may well be greater than we thought."

"It is now plain that the emission of greenhouse gases, associated with industrialization and economic growth from a world population that has increased six-fold in 200 years, is causing global warming at a rate that is unsustainable," he wrote.

Over the next century, global warming is expected to raise ocean levels, intensify storms, spread disease to new areas and shift climate zones, possibly making farmlands drier and deserts wetter.

The U.N.-backed Intergovernmental Panel on Climate Change says temperatures rose by about 1 degree during the 20th century. Computer modeling predicts increases of between 2.5 degrees and 10.4 degrees by the year 2100, depending on how much is dome to limit greenhouse gas emissions.

Scientists have warned of climatic "tipping points" such as the Greenland and West Antarctic ice sheets melting and the Gulf Stream shutting down.

In the British report, the head of the British Antarctic Survey, Chris Rapley, warned that the huge west Antarctic ice sheet may be starting to disintegrate, an event that could raise sea levels by 16 feet.

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