s
Want some proof? How about this?
The NOAA says that U.S. temperatures in the 2000s were overall about 1.5 degrees warmer than they were in the 1970s.
http://www.latimes.com/news/nationworld/nation/la-na-climate-noaa-20110630,0,4799161.story
I can only assume this isn’t all you have. What else?