http://www.hprcc.unl.edu/products/maps/acis/mrcc/JJA09TDeptMRCC.png

The summer of 2010 was the hottest in New York’s history, which proves global warming.

The summer of 2009 was the coldest in Chicago’s history, which also proves global cooling. Or perhaps it was the “Urban Cold Island” effect.

Heat is climate, but cold is just weather.