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The Inventor Who Almost Ended the World
Cautionary Tales with Tim Harford
CFCs and Ozone Depletion
All ozone depletion figures to date are computer projections based on a series of uncertain assumptions. The first CFCs to be produced decades earlier would only just have reached the stratosphere. Tantalizing hints of evidence began to emerge, but you really needed a long-term series of data points to establish there was a trend.
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