We may be in a warming period, the real question is that for millions of years the climate goes thru cooling and warming periods. So is "man" affecting this cycle? I doubt it.
Well the converse is worse, because 100,000 years ago North America was an arctic region covered in ice. Last glacial period
71 posted on 05/17/2013 4:26:47 AM PDT by central_va
(I won't be reconstructed and I do not give a damn.)