16 November 2013

Saving the Ozone May Slow Earth's Warming Rate

By Tim Radford

The ozone layer was the second great atmospheric crisis of the late 20th century (the first involved the urban smog and acid rain that triggered clean air legislation in Europe and the US). CFCs were the safe, enduring gases used as refrigerants: their only problem was that - once they reached the stratosphere - they unexpectedly began to destroy the ozone layer that screens out harmful ultraviolet light.

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