NCDC says that this past summer was the hottest in US history, but the raw data shows that afternoon temperatures were 18th hottest since 1895, and that temperatures have been declining since the 1920s. The summer of 1936 had maximum temperatures almost two degrees warmer than the summer of 2012. The ten hottest summers all came with CO2 below 350 PPM.
NCDC knows that they can manipulate the data any way they want, and as long as they stamp an official looking government logo on their data – the sheeple will believe them.