I just finished the book Dark Winter by Casey wherein he summarizes how the sun has recently entered a "solar minimum" and the reduced energy output from the sun will result in slightly lower average temperatures around the globe with some not so pleasant side effects for life on earth. The cooler period should only last about 30 years before the minimum ends and if you do not want to read the book, you can read about it by clicking on the following link:

http://www.newsmax.com/Headlin...014/11/16/id/607672/