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Ice Age Data Bolsters Greenhouse Gas, Warming Link
Reporter: Associated Press
Scientists say that further strengthens the scientific case explaining current man-made global warming.
The study in Wednesday's journal Nature compared global temperatures -- based on mud and ice data -- to carbon dioxide levels.
Researchers found that 17,000 years ago when the ice age was ending, there was a noticeable link between greenhouse gas and temperature increases. The gas jumped first and then temperatures followed in a similar curve when put on a graph.
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