The world’s leading climate scientists tell us that we need to reduce atmospheric CO2 to 350 ppm to stop the polar ice caps from melting. But will that work?
310 ppm is obviously too high.
http://news.google.com/newspapers
300 ppm is also too high
NYT – December 1938
“World Climate Growing Warmer, Say Russians, Citing Arctic Data; Two Professors Independently Find Change in Temperatures–They See a Gulf Stream Relation, but Look for Deeper Causes TEMPERATURE RISE OVER WORLD SEEN”
http://select.nytimes.com/gst/abstract.html?res=F40D14F63C5F1B7A93C0A81789D95F4C8385F9