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Arctic meltdown has global impact

Global Warming Alert
Published: Friday, March 16, 2007

The meltdown in the Arctic may have reached a tipping point that could trigger a cascade of climate changes and profoundly affect the weather in Earth's temperate regions, a new study warns.
"When the ice thins to a vulnerable state, the bottom will drop out and we may quickly move into a new, seasonally ice-free state of the Arctic," says Mark Serreze, a senior researcher at the National Snow and Ice Data Center at the University of Colorado at Boulder and lead author of the study published in the journal Science today.
"I think there is some evidence that we may have reached that tipping point, and the impacts will not be confined to the Arctic region."
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