| http://www.w3.org/ns/prov#value | - As he said, ???What???s the use of having developed a science well enough to make predictions if, in the end, all we???re willing to do is stand around and wait for them to come true???? The discovery, in the mid-nineteen-eighties, of an ozone ???hole??? over the South Pole persuaded world leaders, including Ronald Reagan, that the problem was, in fact, urgent, and a global treaty phasing out CFCs
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