The Alabama State Climatologist Dr John Christy of the University of Alabama in Huntsville in testimony before the House Energy and Power Subcommittee of the US Congress on 20 September 2012, has demolished the claims of the warmist alarmists. He said that extreme events like the recent US drought will continue to occur ,with or without human causation. He said that the recent claims about thousands of new record high temperatures were based on stations whose length of record could begin as recently as 1981, thus missing the many heat waves of the 20th century. So, any moderately hot day now will be publicized as setting records for these young stations because they were not operating in the 1930s.
He said that the occurrence of the records by decade makes it obvious that the 1930s were the most extreme decade and that since 1960, there have been more all time cold records set than hot records in each decade. The clear evidence is that extreme high temperatures are not increasing in frequency. About 75 percent of the states recorded their hottest temperature prior to 1955!