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Will Compasses Point South?

Posted: 7/14/2004 12:00:00 AM   Reads: 342   Submitted By:clayroy   Category: Science Controversies   Source: www.nytimes.com
A reversal could knock out power grids, hurt astronauts and satellites, widen atmospheric ozone holes, send polar auroras flashing to the equator and confuse birds, fish and migratory animals that rely on the steadiness of the magnetic field as a navigation aid.






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