Reader's view: Temperatures have varied naturally for millions of years
In July 1936 St. Paul endured three weeks of temperatures rivaling a Phoenix summer. On July 14, 1936, St. Paul hit 108. To the north, Moorhead, Minn., reached 114 a few days earlier. The dry Dustbowl raged across the Midwest. July of 1936 is the hottest U.S. month in recorded history, despite atmosphere carbon-dioxide levels being much lower than in 2014.
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