"Roger Coppock" wrote in message
oups.com...
These globally averaged temperature data come from NASA:
http://www.giss.nasa.gov/data/update/gistemp/GLB.Ts.txt
They represent the results of tens of millions of readings
taken at thousands of stations covering all the lands of the
Earth over the last 125 years. Yes, the data are corrected
for the urban heat island effect. Unlike other weather and

This type of data and its comparisons are pretty inconclusive. However,
paleotemperature data show things don't stay the same for very long, and
it's better if things are getting warmer than if they were getting colder.