Kristy
09-09-2008, 05:10 PM
Perhaps now is a good time to think about Earth?s magnetic field or the solar wind.
More... (http://www.nytimes.com/2008/08/07/opinion/07thu4.html?partner=rssnyt&emc=rss)
More... (http://www.nytimes.com/2008/08/07/opinion/07thu4.html?partner=rssnyt&emc=rss)