May 21, 2007 3:00 AM

Scientists report rise in levels of carbon dioxide

Instead of slowing down, worldwide carbon-dioxide levels have taken a sudden and alarming jump since the year 2000, an international team of scientists reported Monday. CO2 emissions from fossil fuels mostly coal, oil and gas are increasing at three times the rate experienced in the 1990s, they said. The rapid acceleration could make the battle against global warming even more difficult than it already appears.

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