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	Podcast:		Witness: Archive 2013
	Episode:		The Keeling Curve
	Category:		Society & Culture
	Duration:		00:09:03
	Publish Date:		2013-01-02 03:12:00
	Description:		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
	Total Play:		0