Who says it has risen 10 degrees? Is it the same group that designed the “hocky-stick graphs”? There is NO credible proof since the ones making the “historical records” are the one’s who actually believe that man is making “CLIMATE CHANGE!” Go ask the dinosaurs about it since they were here before man was able to “destroy” the earth’s climate. I did. The fossil remains from Antarctica show that the continent was once a lush polar forest. Not sure where the 10 degree figure came from, but I don't see how you get a lush forest if the ice caps were still there so it obviously was quite a bit hotter then.