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Zusammenfassung:
Numerous records now show how we humans are altering the planet, with potentially global consequences for climate. But the first and now iconic examples of documenting global climate change were the precise measurements of the concentration of carbon dioxide in the atmosphere made at the mountain station on Mauna Loa, Hawaii, by Charles David Keeling. If the world today realizes that it has a problem and needs to curb emissions of greenhouse gases, it in large part owes this knowledge to Keeling's painstaking efforts.
