Energy & Green Tech

Why aren't there electric airplanes yet?

As electric cars and trucks appear increasingly on U.S. highways, it raises the question: When will commercially viable electric vehicles take to the skies? There are a number of ambitious efforts to build electric-powered ...

Energy & Green Tech

Does energy storage make the electric grid cleaner?

Carbon-free energy: Is the answer blowing in the wind? Perhaps, but the wind doesn't always blow, nor does the sun always shine. The energy generated by wind and solar power is intermittent, meaning that the generated electricity ...

Computer Sciences

Hybrid approach optimizes grid

The modern "smart" city, says Jie Liu, is a web of networks that should run like a healthy, well-tuned circulatory system.

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