Ancient global warming suggests high sensitivity to carbon dioxide - Xinhua

[SIZE=-2]Mongabay.com[/SIZE]Ancient global warming suggests high sensitivity to carbon dioxide
[SIZE=-1]Xinhua - 3 hours ago[/SIZE]
[SIZE=-1]LOS ANGELES, Dec. 9 (Xinhua) -- Global warming from 55 million years ago suggests that climates are highly sensitive to carbon dioxide, according to a study published by the latest issue of Science.[/SIZE]
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