by Pearl Hahn 

The next time you consult Wikipedia, keep in mind that Wikipedia users can edit articles, remove information, and freeze pages to prevent others from making changes.  Lawrence Solomon, a Canadian environmentalist and author of “The Conserver Solution,” has publicly taken issue with shenanigans clouding the accuracy of Wikipedia’s article on the Medieval Warm Period (MWP). In the span of three days, Climategate member William Connolley waged a war against Wikipedians attempting to present a balanced view of the Medieval Warm Period, changing the page 50 times in an effort to keep out some key facts.

What is the Medieval Warm Period and why are proponents of anthropogenic (human-caused) global warming in such a tizzy over it? Basically the Medieval Warm Period remains an irritating chink in their bruised armor.  Currently, the Wikipedia article describes MWP as a time of warm climate in the North Atlantic region lasting from AD 800-1300.

This sentence sums up the Wikipedia version of MWP’s relation to global warming: “Global temperature records taken from ice cores, tree rings, and lake deposits, have shown that, taken globally, the Earth may have been slightly cooler during the ‘Medieval Warm Period’ than in the early- and mid-20th century”.

Well well well- if temperatures during the Medieval Warm Period were so cool, why is it called the Medieval Warm Period? Contary to what Connolley and Co. would have you believe, during the Medieval Warm Period, many parts of the world were in fact much warmer than today. According to the United States Geological Survey and the Harvard-Smithsonian Center for Astrophyics, the 20th century is not the warmest century of the past 1000 years. Researchers at the Harvard-Smithsonian Center for Astrophysics confirmed that MWP was a worldwide phenomenon and not limited to Europe and North America. Most importantly, they found that many parts of the world show medieval warmth to be greater than that of the 20th century. This piece of information is especially hard for global warming alarmists to swallow. How can they blame manmade CO2 emissions as the cause for temperature increases when there were no increases in emissions to account for over five hundred years of warmth during MWP?

Wikipedia’s MWP page relies heavily on studies authored by Michael Mann and Raymond Bradley. This would be the same Raymond Bradley who was urged to hide data by Michael Mann and whose work was seen as biased by other scientists in the Climategate emails. Michael Mann is under investigation at Penn State University. He is still trying to explain away his emails in which he encouraged data manipulation and silencing of his critics.

Pearl can be reached at pearl@grassrootinstitute.org