http://www.huliq.com/tags/lethal-radiation The taxonomy view with a depth of 0. en http://www.huliq.com/17529/earth-had-as-strong-magnetic-field-as-3-2-billion-years-ago Geophysicists at the University of Rochester announce in today's issue of Nature that the <strong>Earth's magnetic field </strong>was nearly as strong 3.2 billion years ago as it is today. http://www.huliq.com/17529/earth-had-as-strong-magnetic-field-as-3-2-billion-years-ago#comments Science Earth&#039;s formation Earth&#039;s magnetic field lethal radiation planet&#039;s atmosphere Solar Wind Thu, 05 Apr 2007 00:04:06 -0500 harminka 17529 at http://www.huliq.com