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The importance of electric power is demonstrated by this view from space of lights across the continental United States at night. A severe geomagnetic storm could disrupt the nation's power grid for months, potentially leading to widespread blackouts. Resulting damage and disruption from such an event could cost more than $1 trillion, with a full recovery time taking months to years.
Scientists recently published research -- including maps covering large areas of the United States -- showing how the effects from intense geomagnetic storms are impacted by the Earth's electrical conductivity. This is one of the first steps towards mapping nation-wide "induction hazards."Image credit: NASA
