SurvivalBlog Readers’ & Editors’ Snippets
This weekly column is a collection of short snippets: responses to posted articles, practical self-sufficiency items, how-tos, lessons learned, tips and tricks, and news items — both from readers and from SurvivalBlog’s editors. Note that we may select some long e-mails for posting as separate letters. — Tracy M. sent us the link to this fascinating study: Mapping a Magnetic Superstorm: March 1989 Geoelectric Hazards and Impacts on United States Power Systems. Here is a brief excerpt: “Electric fields induced in the Earth during magnetic storms can drive uncontrolled currents in electric-power systems, interfering with their operation. Geomagnetically induced currents realized …