Years ago before there was a lot of paleo climate data, there were some rather simplistic graphs of ancient climate used to make basic points like “around this time it was warmer than around this other time when it was cooler. Maybe. One of those graphs depicts the now debunked “Medieval Warm Period.” (We now call this the Medieval Climate Anomaly, which included both warm zones and cool zones, was on average, globally, kind of warm, but not as warm as today.)

One of those graphs is shown here, but I’ve carefully labeled it so it will not be misunderstood:

This graph was shown on the Senate Floor by James Inhofe, the famous climate science denier from Oklahoma. This graph has been long discredited. Senator Inhofe should be censured for this.

You should know that this graph has a long and interesting history … Continue reading How to lie with graphs. Looking at YOU, Sen Inhofe →