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Climate-change breaks records in Prague, not Philadelphia Jan 11
Growing concern about climate change means that record-breaking temperatures are big news -- but is global warming making record-breaking events more common, or are they unrelated statistical fluctuations? The simple answer, according to physicists in the US, is that it depends on how long historical temperature data have been gathered for a specific locale. The analysis of temperature data from Prague and Philadelphia suggests that the effects of global warming become apparent after about 130 years of record keeping.
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