Question for The Washington Post's Joel Achenbach: If CO2 made it uncomfortably warm on your porch last Saturday, why couldn't CO2 drive the high temperature last Friday in Moorhead any warmer than 41 degrees below the 1936 record?

Moorhead, MN History | Weather Underground

Max Temperature 73 °F  [Record] 114 °F  (1936)

[Because it was hot on this guy's porch on July 7, 2012]:   Global warming is a fact - Achenblog - The Washington Post

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