'Cheetah' robot rivals running animals in efficiency (w/ video)

A 70-pound "cheetah" robot designed by MIT researchers may soon outpace its animal counterparts in running efficiency: In treadmill tests, the researchers have found that the robot—about the size and weight of an actual ...

California back in running for Tesla battery plant

California is back in the running for a massive battery plant that electric car maker Tesla Motors plans to start building this year, but CEO Elon Musk said the state remains in the "improbable" category for winning the plant ...

Third fire in Tesla Model S reported

A Tesla Model S electric car caught fire this week after hitting road debris on a Tennessee freeway, the third fire in a Model S in the past five weeks.

Tesla fire shows electrics face safety challenges

When debris on a Seattle-area freeway pierced the battery of a $70,000-plus Tesla Model S and touched off a raging fire, it raised new safety concerns for electric-vehicle owners.

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