Science & Technology

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When you flip on a light switch, odds are, you're burning coal. But as the fracking boom continues to unleash huge quantities of natural gas, the nation's electric grid is changing. Power plants are increasingly turning to this low-cost, cleaner-burning fossil fuel.

Bill Pentak stands in the middle of a construction site, looking up at his company's latest project towering overhead — a new natural gas power plant.

Fryman Canyon is one of those special places in the city of Los Angeles — a bit of country and canyon nestled just off the crest of Mulholland Drive, with gorgeous views of the valley and mountains.

It's favored by the canine set — my two dogs love it here — and on any given morning I'm sure to run into fellow canyon lovers, like Stacy Maes and her energetic weimaraner, Astrid.

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There's another surveillance device that's become the new normal for law enforcement, and that's license plate readers.

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Copyright 2015 NPR. To see more, visit http://www.npr.org/.

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Copyright 2015 NPR. To see more, visit http://www.npr.org/.

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Time now for All Tech Considered.

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