Despite warnings that New Orleans was unprepared for a severe hit by a hurricane, America was blindsided by Hurricane Katrina, a once-in-a-lifetime storm that made landfall five years ago this month. We are similarly unready for another potential natural disaster: solar storms, bursts of gas on the sun’s surface that release tremendous energy pulses.
Occasionally, a large solar storm can rain energy down on the earth, overpowering electrical grids. About once a century, a giant pulse can knock out worldwide power systems for months or even years. It’s been 90 years since the last super storm, but scientists say we are on the verge of another period of high solar activity.… Seguir leyendo »