Based on data from the last 75 years. I have two problems with this. 1. How accurate was data 75 years ago, or even 50? 2. The earth is approx. 4 billion years old with humans around for about the last 3 hundred thousand according to the oldest fossils found so far. Any real scientist will tell you 75 years is way, way to little time for a valid analysis. I’m not saying humans have made the air healthier because we have done the opposite in many countries, and have made great strides in less pollution in this country, but blaming so called record floods on an incredibly small amount of data is ridiculous.
How accurate is the data collected today?
Many weather stations are located in cities that can be 10 or more degrees F warmer than the surrounding countryside.
The "Climate Scientist" use mathematical algorithms to "correct" the data.
Of course an algorithm can do whatever the writer wants it to do.