Witness History
Witness History
Proving climate change: The Keeling curve
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October 14, 2019
9 minutes
Available for over a year
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 spoke to Louise Hidalgo about him in 2013.
(Photo: Thick black smoke blowing out of an industrial chimney. Credit: John Giles/PA)