http://almanacnews.com/square/print/index.php?i=3&d=1&t=611


Town Square

Unless we have another planet to send our children and grandchildren to …

Original post made by Elizabeth Lasensky, Menlo Park: other, on May 12, 2007

Before the industrial revolution and for 650,000 years before then, the CO2 content of our atmosphere was about 280 ppm (parts per million).

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