Nashuatelegraph.com: Proof of global warming will come too late to do anything: "“If anything, the history of climate modeling has been one of conservatism and underestimating the impacts of climate change,” Ken Caldeira, a researcher at the Carnegie Institution Department of Global Ecology at Stanford University, observed recently.
Perhaps the most sobering data come from studies of climates past. Late last year, European researchers published an analysis of an Antarctic ice core containing climate information going back 650,000 years. (The ice contains tiny bubbles of trapped air, each a sample of ancient atmosphere.) The core shows that carbon dioxide levels today are higher than they have been at any point in that entire period.
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