"At a per-passenger-mile basis, rail is about three times as efficient as travel by car, in terms of fuel efficiency, and six times as efficient as travel by air, so there are pretty substantial pollution reduction benefits both in terms of greenhouse gases and other pollutants."

VOA: standard.2010.02.15

As an EDF Climate Corps fellow with eBay, Megan Rast took the challenge to make the business case for energy efficiency and carbon reduction initiatives this summer.

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By the same token, renewable technologies are following similar output efficiency and cost reduction curves, while growing more quickly than most optimistic projections of just a few years ago.

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By doubling the number of StemCell Media processors compared to the previous ZMS-20, the ZMS-40 delivers twice the peak media performance, while running the larger array at lower clock speeds to achieve the same performance leads to greater energy efficiency and a reduction in power consumption of up to 50 percent.

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