(Sarah of the Clue Crew reports from a beach UC San Diego's Scripps Institution of Oceanography.)  In 1958, Scripps scientist Charles Keeling began using flasks to measure this gas in the atmosphere; the "Keeling curve" is a symbol of climate change
... Cal Tech
, Keeling developed an accurate system for measuring the carbon dioxide ... and 
Roger Revelle of Scripps, Keeling began an extensive survey of the atmospheric
... [DOC] [TLE] Keeling Curve - Scripps Institution of Oceanography [PAR] Sep 23, 2016 ...