Charles David Keeling and the story of atmospheric CO2 measurements.

When he was a postdoc in geochemistry at Caltech, Charles David Keeling found himself ideally prepared for the moment when funding for the International Geophysical Year enabled him to design and build a CO(2) monitoring station on Mauna Loa in Hawaii in 1957. He applied rigorous analytical procedures to a geophysical study with enormous implications for humanity.