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24 Apr 2015: Long-Term CO2 Record by Keeling
Named National Historic Chemical Landmark

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Keeling Curve

NOAA
The Keeling Curve is a long-term record of atmospheric CO2 levels.
The Keeling Curve — a long-term record of rising carbon dioxide in the planet’s atmosphere — will be named a National Historic Chemical Landmark, the American Chemical Society announced yesterday. The late geochemist Charles David Keeling began collecting precise, systematic data on atmospheric CO2 concentrations at Hawaii's Mauna Loa Observatory in 1958. Since then, the rigorous and continuous measurements have become the most widely recognized record of humans' impact on the planet, helping to illustrate the link between rising CO2 levels from burning fossil fuels and global warming. “The Keeling Curve is an icon of modern climate science,” said Thomas Barton, past president of the ACS. Other notable works highlighted by National Historic Chemical Landmark program, which recognizes seminal events in the history of chemistry, include the discovery of penicillin, deciphering of the genetic code, and the works of Rachel Carson, Thomas Edison, and George Washington Carver.


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