Engineering

Cooler transformers could help electric grid

Most people do not give the U.S. electric grid a second thought—we flip a switch, and the lights come on. Behind the scenes are thousands of power plants and utilities linked by millions of miles of transmission lines. ...

Energy & Green Tech

This adaptive roof tile can cut both heating and cooling costs

About half of an average American building's energy consumption is spent on heating and cooling. That's a lot of money spent, fossil fuel burned and strain on an aging energy infrastructure during times of severe temperatures.

Energy & Green Tech

The next generation of solar energy collectors could be rocks

The next generation of sustainable energy technology might be built from some low-tech materials: rocks and the sun. Using a new approach known as concentrated solar power, heat from the sun is stored then used to dry foods ...

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