June 5, 2007
University of Utah physicists developed small devices that turn heat into sound and then into electricity. The technology holds promise for changing waste heat into electricity, harnessing solar energy and cooling computers. “We are converting waste heat to electricity in an efficient, simple way by using sound,” says Orest Symko, a University of Utah physics [...]
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May 22, 2007
New York City’s fleet of yellow cabs will go entirely hybrid within five years, and all its vehicles for hire will have to meet new emissions and mileage standards by next year, according to Mayor Michael Bloomberg. The city said the increase in fuel efficiency will save taxi operators more than $10,000 per year. The [...]
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