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The Keeling Curve

How a young American scientist began the work that would show how our climate is changing. His name was Charles Keeling and he meticulously recorded levels of CO2 in the atmosphere. His wife Louise and son Ralph remember him.

Photo: John Giles/PA Wire

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9 minutes

Last on

Sun 6 Jan 2013 01:50GMT
大象传媒 World Service Online

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