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Can US Power Grid Handle a Surge of Electric Cars?

(Oct. 17) -- A new generation of vehicles powered at least partially by electricity is on the way. And the prospect of a million or more Chevy Volts, Nissan Leafs, Tesla Roadsters and others on our highways in the next few years raises a practical question: Can the nation's electrical grid handle the power surge? The grid...

Do Solar Storms Threaten Life as We Know It?

(June 8) -- The newest looming threat for doomsday forecasters doesn't involve plagues, death beams or killer asteroids, but rather the natural energy of the sun, which in one alarming scenario could take down modern power grids. The concern is that bursts of radiation from the sun's surface could cripple satellites in...