Wednesday, April 11, 2007

Science corner: the natural carbon cycle vs. fossil fuels

Terra Pass
by Adam
We get a steady stream of questions that hinge on a basic confusion over the difference between the natural carbon cycle — the continual uptake and release of carbon dioxide by biological organisms — and the burning of fossil fuels. This post is an attempt to set the record straight. We hope that it achieves the worldwide acclaim of our post on how to turn 6 pounds of carbon into 20 pounds of CO2. I now present to you the most famous graph in climate science, the Keeling Curve: This trend line shows in precise detail how atmospheric concentrations of...

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