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Revisiting The 'Keeling Curve'

In the late 1950s, scientist Charles David Keeling began research that would prove to be a key signpost of climate change. In this archived story, hosts Madeleine Brand and Alex Chadwick talked with Keeling's widow and other scientists about the impact of Keeling's work.

This piece was the first in the series "Climate Connections." It originally aired on May 1, 2007.

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