And accurate global records have been kept for what, fifty years?
And the so-called records are not being fudged by those with an agenda?
Chrichton makes the point that to get those kind of records, you have to measure the temperatures in major metropolises. For instance, the state of New York has been getting cooler for the last 30 or so years while NYC itself has been getting steadily warmer. The earth as a whole hasn't changed more than 1/2 a degree in the last 100 years, apparently.
I noticed myself in December, by checking the car thermometer, that just driving from the countryside into as small a ciy as Charlottesville, VA was enough to record an immediate temperature rise of 2 or 3 degrees.