Current Warming Period Is Longest in 1,200 Years, Study Says:
Sara Goudarzi
for National Geographic News
February 9, 2006
It's not normal, a new study says of the current global warming period.
Researchers analyzed tree rings, ice cores, fossils, and other 'proxy climate records' and found that the present warming phase has lasted longer and affected a broader area than any other such period in the last 1,200 years. "
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