I have a son who is quite liberal and is about to receive his PhD in Science, Technology, Engineering and Math (STEM) Education. That means he will be teaching future teachers what and how to teach. When I asked him about Global Warming, he immediately pulled out data showing that over the past few decades, the amount of carbon dioxide in the World's atmosphere has doubled. When I looked at the units related to the 'doubling', they were in parts per million. He then showed me data on global temperature changes over the same period and they fluctuated all over the graph, but he said, "The trend is obvious" that we are seeing a slight increase over that period. I think his estimate was about 0.6 degrees F or as I told him 0.3 degrees Centigrade. That irritated him since he knows that scientists are supposed to use the metric system, but he was using the English system to make the supposed change appear greater than it is.
When I asked him what experiments have these so-called Environmental Scientists done to prove that this very, very minor increase in CO2 is directly related to this very, very minor change in temperature, he could not give me an example of such an experiment.
I then showed him a report from a NASA satellite study that showed that CO2 was not blocking reflected sunlight creating a so-called "Greenhouse Effect" nearly as much as Environmental Scientists had Projected or Felt.
We agreed to disagree.
Liberal/Progressives have their own way of looking at things and they certainly are different from my way. As far as I am concerned "They make up facts."