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Want some proof? How about this?
On July 12, 2011, the minimum temperature in Richmond, Virginia, was 81 degrees. This was the first time in recorded history that Richmond had a minimum temperature of 80 degrees or higher.
http://www.erh.noaa.gov/akq/wx_events/summer/pns_heat_jul2011.txt
I’m not sure how this affects me personally--so who cares?